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Doing Business is a sort of economic cholesterol check — important, even critical, but not the whole story.

some critics perceive Doing Business as a libertarian argument against the collection of taxes. On the contrary, Doing Business facilitates the participation of companies in the formal economy, including the payment of taxes and respect for the legal framework

The consensus, quite reasonably, calls for more women’s economic empowerment in the developing world. If we want to see empowerment, that generally means women participating in the formal economy, accessing loans from banks, and participating in global supply chains. Any business that seeks bank loans or seeks to participate in supply chains needs to be a formal business. Making it easier for anyone to start a business also has a positive impact on women’s economic empowerment

The Doing Business indicators have been subject to a number of methodological adjustments. These have been relatively minor in impact on most countries’ rankings. In the case of Chile, for a variety of reasons, the rankings swung more wildly, in such a way that the center-left Michelle Bachelet administration accused the World Bank and the rankings of being politically motivated. To make matters worse, Paul Romer, then the chief economist of the World Bank, in response to a question from the Wall Street Journal about the possibility of the the ranking being “tainted by the political motivations of bank staff” seemed to imply that he found the rankings unfair and misleading, and he said he would “recalculate national rankings of business competitiveness.” This caused a furor. Romer retracted his statement within 72 hours, the World Bank board reviewed the indicators, and management formally responded.

In the future, the World Bank’s money will be less and less important. Instead, its analytics, data, and ability to share lessons across countries are going to be increasingly valued. The World Bank imprimatur also matters more than we appreciate in the United States. The Doing Business indicators should be a big part of the World Bank’s future. Countries that seek to make improvements in their rankings of Doing Business are countries that seek to have better governance and have reform-minded governments. After 15 years of effort, Doing Business has improved with time and is one of the most valuable assets of the World Bank Group.

a stronger outcome remains possible. The predictable removal of pandemic-control measures, coupled with the rapid and unprecedented global policy response can trigger a rapid recovery in confidence and employment, unleashing pent-up demand. However, even with these positive developments, the contraction in global output of 3.7 percent in 2020 would still be about twice as deep as during the global recession of 2009

Total global foreign direct investment has not returned to its highs more than a decade ago.

globalization is complex, and not every indicator points in the same direction. The intensity of trade in goods is down, but in services it’s up. The flow of data across borders has risen dramatically, even as countries like China and Iran seek to restrict it. International travel and study abroad were at all-time highs before the coronavirus pandemic

Globalization is often blamed for financial crises—not only the global one of 2008, but also the 1997 Asian crisis and others in Russia, Turkey, Ecuador, Cyprus and elsewhere

expanded inequality both among nations and within them

consume more energy and produce higher greenhouse-gas emissions

since 2003, the world has seen successive outbreaks of SARS, swine flu, MERS, Ebola, and the Zika virus

many of those benefits are diffuse and taken for granted, while the costs—lost manufacturing jobs, for instance—remain concentrated. And those on the losing end of globalization now have a new political voice: populist parties promising sovereignty, nationalism, and local solutions, as well as a weakening of elite-led, seemingly unaccountable international institutions

Many see COVID-19 not as a cause around which the world’s governments should rally, but rather as the most dramatic example of an already broken globalized system.

it is easy to imagine governments around the world broadly rethinking international travel, migration, supply-chain risk, export controls, information sharing, and more—in short, key components of globalization itself. The new watchword is likely to be risk reduction rather than cost reduction.

Fragile supply chains are not an indictment of globalization per se, but of the way companies have become dependent on single sources of supply

economic integration will still take place, but it will continue to shift from the global to the regional and bilateral level

How to protect workers without undermining globalization’s economic benefits, including a higher standard of living, remains an unsolved question.

Closed borders, travel bans, paralyzed supply chains, and export restrictions have prompted many to ask whether globalization itself might fall victim to the coronavirus.

globalization was already in decline well before the outbreak, having reached its peak before the 2008 global financial crisis and having never recovered since then

The worldwide interconnectedness of goods, services, capital, people, data, and ideas has produced undeniable benefits. But during this pandemic, the risks of dependency have fully entered the public consciousness

the pandemic has demonstrated the fragility of supply chains, prompted national responses rather than cooperative international ones, and reinforced nationalist arguments for reshoring manufacturing and more limited migration

By directly acquiring mines, accumulating equity stakes in natural-resource companies, making long-term agreements to buy mines’ current or future production (known as “off-take agreements”), and investing in new projects under development, Chinese firms traded much-needed capital for outright control or influence over large shares of the global production of these resources. Despite China’s slowing growth and a major pullback in its foreign direct investment in other sectors, the government has maintained robust financial support for resource acquisition; mergers and acquisitions in metals and chemicals hit a record high in 2018.

China lacks significant reserves of three resources vital to its tech ambitions: cobalt, platinum-group metals, and lithium. It has successfully employed two strategies to secure control of them. One is driven by China’s state-owned enterprises (SOEs), which use development finance and infrastructure investment to embed themselves in higher-risk countries, establishing close ties with government leaders. The second is investment by state-linked private firms in market-based economies. Both strategies have shown agility and an ability to effectively adapt to local circumstances to achieve the same end.

Chile is home to 57 percent of the world’s known lithium reserves, the world’s largest known concentration, and SQM controls roughly half the country’s production

DRC is home to nearly two-thirds of the world’s cobalt production and half of its known reserves. Those resources are the prime target of investors for the booming battery industry. Over a decade of steady engagement, China has staked out a dominant position by developing strong political ties and investing in production assets and related infrastructure

China’s SOEs and private firms have made at least eight major equity and off-take plays in platinum-group metals in the Bushveld Complex. Such investments in South Africa’s highly concentrated and strategic resource deposits have helped make metals the country’s leading source of export growth, with nearly 50 percent of its metal exports going to China—tying South Africa’s economic welfare directly to Chinese investment.

the three countries where nearly 90 percent of global lithium production and more than three-quarters of the world’s known lithium reserves are located: Chile, Argentina, and Australia. In just six years, China has come to dominate the global market: More than 59 percent of the world’s lithium resources are now under its control or influence

China now owns or has influence over half of the DRC’s cobalt production, and has a massive stake in its mining industry. Six months ahead of the presidential elections, the event also sent a strong message to candidates about China’s deep investment in copper and cobalt mining—which constitutes 80 percent of the DRC’s export revenue and thousands of jobs—and its capacity to influence the future of the DRC’s economy

Natural resources are abundant in China; it is the No. 1 producer and processor of at least ten critical minerals and metals that are essential to high-tech industries and upon which China’s commercial and strategic competitors depend. To reinforce its strength, Chinese firms are acquiring mines and output from the next-largest producers and reserves, giving China both an economic edge in the next high-tech industrial revolution and increasing geopolitical power.

In a cash-strapped industry, Chinese firms are financing mine expansion and new development in exchange for a guaranteed supply of lithium in both mature and emerging markets. In Argentina, where President Mauricio Macri is eliminating mineral export taxes, reducing corporate tax rates, and allowing profit repatriation, China is establishing a dominant position in the nascent sector with “streaming deals,” which provide development capital in exchange for future lithium yields to help projects get off the ground. Chinese firms, led by Ganfeng, have stakes in 41 percent of the country’s major planned projects that account for 37 percent of Argentina’s reserves. This raw-material strategy is already coming to fruition: Lithium export volumes from Argentina to China rose nearly fourfold from 2015 to 2017, and China has secured access to the country's lithium for the longer term.

This same strategy, combined with asset acquisition, has also been successful in Australia, whose proximity to China, significant lithium reserves, and broad political support for mining investment have attracted Chinese investment. Tianqi and Ganfeng have established stakes in 91 percent of the lithium mining projects underway and 75 percent of the country’s reserves, including some of the world’s largest.

Though the final agreement included restrictions on Tianqi’s board and committee participation and its access to SQM’s sensitive data, Tianqi’s equity position still confers considerable influence over SQM.

Perhaps the best-known example both of China’s natural-resource dominance and its willingness to exploit it is rare-earth elements, a group of 17 elements that (despite their name) are commonly found, but rarely in concentrations that can be economically extracted. They are important materials for the defense, aerospace, electronics, and renewable energy industries. Over the past two decades China has produced more than 80 percent of the world’s production of rare-earth elements and processed chemicals. In 2010 it cut off exports to Japan amid rising tensions over the East China Sea, and the following year it imposed export quotas that threw governments and manufacturers into a panic. But with the exception of Japan, the attention to this critical vulnerability was short-lived, and little action was taken by other countries reliant on imports to diversify their resources or develop minerals action plans of their own.

China declared rare-earth elements a strategic resource in 1990 and prohibited foreign investment in the sector. Six state-owned enterprises control the industry, and the government cut production quotas in 2018 by 36 percent. With global demand for rare-earth elements projected at a compound average growth rate of more than 17 percent to 2025, a supply crunch is likely approaching—and China is already securing other nations’ supplies

While Russia strictly limits foreign participation in rare-earth element development, Chinese firms have accumulated off-take agreements and stakes in rare-earth element mines in Australia and Brazil

in 2017, China’s Shenghe Resources and two U.S. private equity firms acquired the sole U.S. and North American rare-earth element producer and processor, Molycorp, and its idled mining operations at Mountain Pass, California.

In 2016, China’s Yellow Dragon Holdings Ltd. co-invested with Bushveld Minerals, the primary vanadium developer in South Africa’s massive Bushveld Complex, to acquire Strategic Minerals, which owned the Vametco vanadium mine and plant. Yellow Dragon subsequently increased its investment in Bushveld Minerals and has become the fifth-largest shareholder. The holdings deepen China’s influence over South Africa’s vanadium resources and its role in the country’s emerging high-tech sector

China’s position is even stronger in graphite, a crystalline form of the element carbon whose high conductivity makes it a major component in electrodes, batteries, and solar panels, as well as industrial products such as steel and composites. For the last 20 years, China has been the leading global supplier of graphite, representing nearly 70 percent of the world’s production in 2018 and 24 percent of its reserves. While synthetic graphite, which is produced from petroleum coke, is an alternative, unfavorable economics constrain its use

New projects are concentrated in Mozambique, where the world’s largest graphite mine and fourth-largest known reserves are located. Already, Chinese firms have secured off-take agreements with the three major developers in Mozambique for the majority of their graphite production, and they are financing new development.

Japan is 90 percent reliant on China for its graphite

This resource consolidation could determine whether China is able to overcome the last major hurdle to achieving its ambitions: a competitive semiconductor industry.

Semiconductors can be pure elements or compounds and altered with impurities to improve their conductivity. Several materials are now being used to improve speed and performance, including rare-earth elements, graphite, indium, gallium, tantalum, and cadmium. China is the dominant producer of five out of the six, controls more than 75 percent of the world’s supply of three, and is consolidating control over them all

Should China succeed technologically, its capacity to scale production and flood markets (as it has already done with solar panels and wind turbines) has serious implications not only for leading semiconductor producers, but also for national security, if Chinese-manufactured chips are embedded in the devices upon which our data-driven lives, our economies, and our defense systems increasingly depend. While government and industry officials have started to restrict semiconductor sales and scrutinize Chinese acquisition of technology firms—e.g., the United States’ temporary ban on selling semiconductors to ZTE, or the recent flare-up over Huawei —such moves are strengthening China’s resolve to develop its domestic industry. More attention should be paid to its efforts to consolidate critical raw materials and the computing power they confer.

In April, U.S. government officials announced plans to meet with lithium industry leaders and automakers with the intention of developing a national electric-vehicle supply chain strategy. It is a start.

In a review of Covid-19 social response programmes, cash transfer programmes were found to be: Short-term in their duration – lasting just over three months on average Small in value – an average of $6 (£4.30) per capita in low-income countries Limited in scope – with many in need remaining uncovered

The world’s food systems endured numerous shocks in 2020, from economic impacts on producers and consumers to desert locust swarms and erratic weather. All indicators suggest that this may be the new normal. The ecosystems we rely on for water, air and food supply are under threat. Zoonotic diseases are on the rise owing to growing demographic and economic pressures on land, animals and wildlife.

A warming planet is contributing to costlier and more frequent extreme weather events. And as people pack into low-quality housing in urban slums or vulnerable coastal areas, more are living in the path of disease and climate disaster.

We need sustained financing for approaches that prioritise human, animal and planetary health; restore landscapes and diversify crops to improve nutrition; reduce food loss and waste; strengthen agricultural value chains to create jobs and recover lost incomes; and deploy effective climate-smart agriculture techniques on a much greater scale.

Focusing on food security would address a basic injustice: almost one in 10 people live in chronic hunger in an age of food waste and plenty. This focus would also strengthen our collective ability to weather the next storm, flood, drought, or pandemic – with safe and nutritious food for all.

African countries, too, are making manufacturing a top priority. Ethiopia alone has opened nearly a dozen industrial parks in recent years and set up a world-class government agency to attract foreign investment. The World Bank has lauded sub-Saharan Africa as the region with the highest number of reforms each year since 2012.

In the last five years, the American Enterprise Institute’s China Global Investment Tracker has recorded 13 large Chinese investment deals in Africa and only nine in South Asia.

In the past few years, Bangladesh has fallen to 176 out of 190 countries in the global Ease of Doing Business country rankings. DBL Group, a Bangladeshi company, is investing in a new apparel manufacturing facility that will generate 4,000 jobs -- in Ethiopia.

Despite testing far less than its neighbors, Somalia has the highest death toll in East Africa. On April 17 and 18, 72 people were tested, out of which 55 were confirmed positive, a staggering 76 percent infection rate. Since this revelation, the Somali government has stopped sharing the numbers of people tested with the public.

Anecdotal accounts of COVID-19 symptoms and a spike in burials abound. “There is extraordinary community transmission. Infections and deaths are out of control,” explained a Mogadishu doctor on the condition of anonymity. “And why visit a hospital if they can’t treat you?” Somalia’s health infrastructure is mere scaffolding: scarce public hospitals struggling with a lack of equipment, unaccredited doctors in private facilities offering unaffordable services, and medication that is as low-grade as it is scarce.

Somalia’s best-equipped medical institution, Erdogan Hospital in Mogadishu, was shut down in April after 3 of its doctors were infected. Martini Hospital—kitted with 76 beds—is the only medical facility in the whole country designated to treat the infected

Answers to this acute health crisis lie in part with the government’s 2020 budget, which allocated $9.4 million for health spending, a mere 2 percent of the national budget. A whopping $146.8 million was reserved for security institutions—a telling indication of a cash-strapped state facing widespread security threats.

The group heralded the disease as divine punishment for the treatment of Muslims globally. Weaponizing the disease, al-Shabab ushered in Ramadan with an attempted vehicle-borne explosive attack at a military base on the first full day of the holy month.

Like the virus, al-Shabab transcends national borders and presents risks not only to Somalia but to its pandemic-weakened neighbors, particularly Kenya, which has weathered violent attacks from the group for years. Born out of a power vacuum itself, al-Shabab will capitalize on lapses in states’ security apparatus as governments redirect resources from preempting terror attacks to enforcing curfews

risks reversing critical security gains

Kenya’s northeastern towns lying on its border with Somalia have been particularly vulnerable to devastating al-Shabab attacks. In response to the illegal smuggling of people and goods from both Somalia and Ethiopia, Kenyan security authorities have recently ramped up aerial surveillance along its borders, in part, to curtail cross-border infection. Ethiopia’s health minister announced last week that 13 of its new cases were imported via illegal migration from Djibouti and Somalia

More than 80 percent of global trade passes through the Gulf of Aden

the resurgence of piracy can be expected

For more than a year now, the central government has been embroiled in a rancorous fight with two of its federal states. This being an election year, the fledgling Somali state finds itself at a critical juncture. It remains to be seen whether federal elections will be postponed, following in the footsteps of neighboring Ethiopia.

The disappearance of remittances—a lifeline for millions on the continent and estimated at $1.4 to $2 billion annually in Somalia alone—makes the situation all the more desperate. These critical cash flows have dried up as a global recession sets in and incomes of workers in the diaspora shrink.

harrowing statistics from across Europe show that Somali communities have been disproportionately affected by COVID-19. In Sweden, Somalis are dying from the virus at “an astonishing high rate” according to the BMJ despite accounting for only 0.69 percent of the population. The World Bank is calling on governments to designate remittance companies as an essential service, a crucial step to easing restrictions on these financial flows.

The populations most at risk in Somalia are those living in the densely populated camps scattered across the country. More than 2.5 million internally displaced people live in these cramped conditions, already weakened by malnutrition and compromised immune systems, and with limited access to clean water, soap, or bathrooms.

According to the World Food Programme, the number of food-insecure people in East Africa is projected to reach up to 43 million in the next few months—more than double what it is now—sparking fears of conflict over scarce resources.

The specter of drought and famine, alongside the unforgiving plague of locusts that has ravaged crops in recent months

deadly flash floods

will force more people to move, compounding the internal displacement crisis and heightening intercommunal tensions  even as it spreads the disease further

Border closures across the region have throttled migration flows, making it ever harder for people to escape conflict or starvation. This will simply force migration into the shadows, opening up avenues for human trafficking and exploitation. Irregular movement of refugees has already been observed across the Horn of Africa’s highly porous borders.

During  Friday prayers at Mogadishu’s Marwazi mosque on April 10, armed forces tried to forcibly disperse a congregation of worshippers without notice. A massive demonstration broke out, and shoulder-to-shoulder prayers continue across the country today

Riots swept the streets of Mogadishu again on April 24 in response to the fatal shooting of two innocent civilians by police as they tried to enforce a curfew. Ramadan, replete with nightly rounds of public taraweeh prayers, is likely to catalyze disease spread in the absence of clear communication with communities and Islamic leaders.

The virus demands self-sufficiency. Countries are forced to make do with their own systems, however broken.

government’s restrictions on press freedom and access to information about the novel coronavirus to the detriment of its own people

As has often been the case in the disaster-prone country, it will be up to grassroots community groups, the private sector, and members of the diaspora to mobilize en masse to contain the crisis.

Two officials at the Ministry of Health have already been arrested on corruption allegations related to COVID-19 response donations, denting public confidence.

With domestic flights suspended, it is all the more critical to invest in hospital and testing capacity across the country. This cannot be achieved without genuine collaboration between the federal government and its constituent member states.

if we want a decent shot at climate stability, high-income nations will have to shift to post-growth economic principles

Post-growth thinking is starting to trickle into policy, too. Jacinda Ardern, the prime minister of New Zealand, captured headlines in 2019

Economists have long assumed that we need growth to improve people’s lives. But it turns out there’s no empirical evidence for this argument. Beyond a certain point, which high-income countries have long since surpassed, the relationship between GDP and human wellbeing completely breaks down.

dozens of countries beat the US in life expectancy with only a fraction of the income

universal public services are significantly more cost-efficient than their private counterparts. Spain spends $2,300 per person on healthcare,

The reason that GDP growth tends not to deliver the outcomes that we might expect is because the vast majority of it goes straight into the pockets of the rich. They are the real beneficiaries of growth. In the United States, the incomes of the richest 1% have more than tripled since the 1970s,

growthism

We can accomplish our social goals right now, without any growth at all, simply by sharing what we already have more fairly, and by investing in generous public goods. It turns out justice is the antidote to the growth imperative – and key to solving the climate crisis.

The less energy we use, the easier it is to accomplish a rapid transition to renewables. This is perhaps the single most important lesson that climate science has taught us in the past few years.

Think of all the energy that’s needed to extract and produce and transport all of the material commodities that the economy churns out each year. Think of the mining, the logging, the factories, the packaging, the container ships, the warehouses, the retail outlets and the waste disposal facilities. The material economy is a giant energy-sucking machine. By reducing the material "throughput" of our economy – the amount of stuff we produce and consume – we can reduce our energy demand. 

The key thing to grasp is that a huge chunk of material production in our economy is intended, literally, to be wasted. Firms desperate to overcome the limits of saturated markets resort to all sorts of devious tactics to artificially increase turnover. Take planned obsolescence, for example. The lifespan of household appliances like refrigerators and washing machines has plummeted over the past few decades.

Research by US sociologists has revealed that advertising expenditures have a direct impact

We like to think of capitalism as a system that’s rational and efficient when it comes to meeting human needs. But in some respects, it’s exactly the opposite. In pursuit of constant growth, firms resort to intentional inefficiencies. This might be rational from the perspective of profits, but from the perspective of human need, and from the perspective of ecology, it is a kind of madness. It is madness in terms of human labour, too. Think about the millions of hours that are poured into producing stuff that’s designed to break down, or that people don’t actually need in the first place.

We can legislate for long-term warranties, rights to repair, and mandatory take-back schemes. We can regulate marketing expenditures, and we can liberate public spaces from ads telling us to buy even more – both offline and online. The gains from this could be enormous. Think about it: if clothes and refrigerators and smartphones last twice as long, we will consume half as many. That’s half the extraction, half the shipping, half the warehouses, half the transport, half the waste – and half the energy it takes to power it all. 

There are also a number of other steps we can take. We can shift from private cars to public transport. We can ban food waste by supermarkets and farms. We can cut single-use packaging. And we can choose to scale down ecologically destructive and socially less necessary industries, such as SUVs,

But, you might ask, what about jobs? As we scale down unnecessary industrial activity, won’t that cause unemployment to rise? Under normal circumstances, yes. But ecological economists have a surprisingly simple solution to this: shorten the working week. Add a job guarantee to the mix (a policy that happens to be resoundingly popular)

What’s exciting about this move is that it has a substantial positive impact on wellbeing. Studies in the US have found that people who work shorter hours are happier than those who work longer hours, even when controlling for income. And it has a big impact on energy demand, too. If the United States were to reduce its working hours to the levels of western Europe, its energy use would decline by a staggering 20%. 

Public interest in post-growth economics has soared over the past year as the climate crisis worsens. With fires blazing through Australia and the Amazon, floods swamping northern England, droughts driving migration, and record heatwaves searing across Antarctica, people realise that the status quo has us hurtling toward disaster, and they’re increasingly open to new ideas. In the 2020s, we can expect that the climate movement will rally around the Green New Deal and a vision for a completely new economy. 

the planet could see a greater temperature increase in the next 50 years than it did in the last 6,000 years combined. By 2070, the kind of extremely hot zones, like in the Sahara, that now cover less than 1% of the earth’s land surface could cover nearly a fifth of the land, potentially placing 1 of every 3 people alive outside the climate niche where humans have thrived for thousands of years. Many will dig in, suffering through heat, hunger and political chaos, but others will be forced to move on

In Southeast Asia, where increasingly unpredictable monsoon rainfall and drought have made farming more difficult, the World Bank points to more than 8 million people who have moved toward the Middle East, Europe and North America. In the African Sahel, millions of rural people have been streaming toward the coasts and the cities amid drought and widespread crop failures. Should the flight away from hot climates reach the scale that current research suggests is likely, it will amount to a vast remapping of the world’s populations.

Drought helped push many Syrians into cities before the war, worsening tensions and leading to rising discontent; crop losses led to unemployment that stoked Arab Spring uprisings in Egypt and Libya; Brexit, even, was arguably a ripple effect of the influx of migrants brought to Europe by the wars that followed. And all those effects were bound up with the movement of just 2 million people. As the mechanisms of climate migration have come into sharper focus — food scarcity, water scarcity and heat — the latent potential for large-scale movement comes to seem astronomically larger.

Northern nations can relieve pressures on the fastest-warming countries by allowing more migrants to move north across their borders, or they can seal themselves off, trapping hundreds of millions of people in places that are increasingly unlivable. The best outcome requires not only goodwill and the careful management of turbulent political forces; without preparation and planning, the sweeping scale of change could prove wildly destabilizing. The United Nations and others warn that in the worst case, the governments of the nations most affected by climate change could topple as whole regions devolve into war

To better understand the forces and scale of climate migration over a broader area, The New York Times Magazine and ProPublica joined with the Pulitzer Center in an effort to model, for the first time, how people will move across borders

Our model projects that migration will rise every year regardless of climate, but that the amount of migration increases substantially as the climate changes. In the most extreme climate scenarios, more than 30 million migrants would head toward the U.S. border over the course of the next 30 years

If governments take modest action to reduce climate emissions, about 680,000 climate migrants might move from Central America and Mexico to the United States between now and 2050. If emissions continue unabated, leading to more extreme warming, that number jumps to more than a million people. (None of these figures include undocumented immigrants, whose numbers could be twice as high.)

As with much modeling work, the point here is not to provide concrete numerical predictions so much as it is to provide glimpses into possible futures. Human movement is notoriously hard to model, and as many climate researchers have noted, it is important not to add a false precision to the political battles that inevitably surround any discussion of migration. But our model offers something far more potentially valuable to policymakers: a detailed look at the staggering human suffering that will be inflicted if countries shut their doors.

the coronavirus pandemic has offered a test run on whether humanity has the capacity to avert a predictable — and predicted — catastrophe. Some countries have fared better. But the United States has failed. The climate crisis will test the developed world again, on a larger scale, with higher stakes

Climate is rarely the main cause of migration, the studies have generally found, but it is almost always an exacerbating one.

In the case of Addis Ababa, the World Bank suggests that in the second half of the century, many of the people who fled there will be forced to move again, leaving that city as local agriculture around it dries up.

North Africa’s Sahel provides an example. In the nine countries stretching across the continent from Mauritania to Sudan, extraordinary population growth and steep environmental decline are on a collision course. Past droughts, most likely caused by climate change, have already killed more than 100,000 people there. And the region — with more than 150 million people and growing — is threatened by rapid desertification, even more severe water shortages and deforestation. Today researchers at the United Nations estimate that some 65% of farmable lands have already been degraded. “My deep fear,” said Solomon Hsiang, a climate researcher and economist at the University of California, Berkeley, is that Africa’s transition into a post-climate-change civilization “leads to a constant outpouring of people.”

The story is similar in South Asia, where nearly one-fourth of the global population lives. The World Bank projects that the region will soon have the highest prevalence of food insecurity in the world. While some 8.5 million people have fled already — resettling mostly in the Persian Gulf — 17 million to 36 million more people may soon be uprooted, the World Bank found. If past patterns are a measure, many will settle in India’s Ganges Valley; by the end of the century, heat waves and humidity will become so extreme there that people without air conditioning will simply die.

We are now learning that climate scientists have been underestimating the future displacement from rising tides by a factor of three, with the likely toll being some 150 million globally. New projections show high tides subsuming much of Vietnam by 2050 — including most of the Mekong Delta, now home to 18 million people — as well as parts of China and Thailand, most of southern Iraq and nearly all of the Nile Delta, Egypt’s breadbasket. Many coastal regions of the United States are also at risk.

rough predictions have emerged about the scale of total global climate migration — they range from 50 million to 300 million people displaced — but the global data is limited, and uncertainty remained about how to apply patterns of behavior to specific people in specific places.

Once the model was built and layered with both approaches — econometric and gravity — we looked at how people moved as global carbon concentrations increased in five different scenarios, which imagine various combinations of growth, trade and border control, among other factors. (These scenarios have become standard among climate scientists and economists in modeling different pathways of global socioeconomic development.)

every one of the scenarios it produces points to a future in which climate change, currently a subtle disrupting influence, becomes a source of major disruption, increasingly driving the displacement of vast populations.

Around 2012, a coffee blight worsened by climate change virtually wiped out El Salvador’s crop, slashing harvests by 70%. Then drought and unpredictable storms led to what a U.N.-affiliated food-security organization describes as “a progressive deterioration” of Salvadorans’ livelihoods.

climate change can act as what Defense Department officials sometimes refer to as a “threat multiplier.”

For all the ways in which human migration is hard to predict, one trend is clear: Around the world, as people run short of food and abandon farms, they gravitate toward cities, which quickly grow overcrowded. It’s in these cities, where waves of new people stretch infrastructure, resources and services to their limits, that migration researchers warn that the most severe strains on society will unfold

the World Bank has raised concerns about the mind-boggling influx of people into East African cities like Addis Ababa, in Ethiopia, where the population has doubled since 2000 and is expected to nearly double again by 2035

now a little more than half of the planet’s population lives in urban areas, but by the middle of the century, the World Bank estimates, 67% will. In just a decade, 4 out of every 10 urban residents — 2 billion people around the world — will live in slums

Migration can bring great opportunity not just to migrants but also to the places they go

High emissions, with few global policy changes and relatively open borders, will drive rural El Salvador — just like rural Guatemala — to empty out, even as its cities grow. Should the United States and other wealthy countries change the trajectory of global policy, though — by, say, investing in climate mitigation efforts at home but also hardening their borders — they would trigger a complex cascade of repercussions farther south, according to the model. Central American and Mexican cities continue to grow, albeit less quickly, but their overall wealth and development slows drastically, most likely concentrating poverty further. Far more people also remain in the countryside for lack of opportunity, becoming trapped and more desperate than ever.

By midcentury, the U.N. estimates that El Salvador — which has 6.4 million people and is the most densely populated country in Central America — will be 86% urban

Most would-be migrants don’t want to move away from home. Instead, they’ll make incremental adjustments to minimize change, first moving to a larger town or a city. It’s only when those places fail them that they tend to cross borders, taking on ever riskier journeys, in what researchers call “stepwise migration.” Leaving a village for the city is hard enough, but crossing into a foreign land — vulnerable to both its politics and its own social turmoil — is an entirely different trial.

I arrived in Tapachula five weeks after the breakout to find a city cracking in the crucible of migration. Just months earlier, passing migrants on Mexico’s southern border were offered rides and tortas and medicine from a sympathetic Mexican public. Now migrant families were being hunted down in the countryside by armed national-guard units, as if they were enemy soldiers.

Models can’t say much about the cultural strain that might result from a climate influx; there is no data on anger or prejudice. What they do say is that over the next two decades, if climate emissions continue as they are, the population in southern Mexico will grow sharply. At the same time, Mexico has its own serious climate concerns and will most likely see its own climate exodus. One in 6 Mexicans now rely on farming for their livelihood, and close to half the population lives in poverty. Studies estimate that with climate change, water availability per capita could decrease by as much as 88% in places, and crop yields in coastal regions may drop by a third. If that change does indeed push out a wave of Mexican migrants, many of them will most likely come from Chiapas.

even as 1 million or so climate migrants make it to the U.S. border, many more Central Americans will become trapped in protracted transit, unable to move forward or backward in their journey, remaining in southern Mexico and making its current stresses far worse.

Already, by late last year, the Mexican government’s ill-planned policies had begun to unravel into something more insidious: rising resentment and hate. Now that the coronavirus pandemic has effectively sealed borders, those sentiments risk bubbling over. Migrants, with nowhere to go and no shelters able to take them in, roam the streets, unable to socially distance and lacking even basic sanitation. It has angered many Mexican citizens, who have begun to describe the migrants as economic parasites and question foreign aid aimed at helping people cope with the drought in places where Jorge A. and Cortez come from.

a new Mexico-first movement, organizing thousands to march against immigrants

Trump had, as another senior government official told me, “held a gun to Mexico’s head,” demanding a crackdown at the Guatemalan border under threat of a 25% tariff on trade. Such a tax could break the back of Mexico’s economy overnight, and so López Obrador’s government immediately agreed to dispatch a new militarized force to the border.

laying blame at the feet of neoliberal economics, which he said had produced a “poverty factory” with no regional development policies to address it. It was the system — capitalism itself — that had abandoned human beings, not Mexico’s leaders. “We didn’t anticipate that the globalization of the economy, the globalization of the law … would have such a devastating effect,”

No policy, though, would be able to stop the forces — climate, increasingly, among them — that are pushing migrants from the south to breach Mexico’s borders, legally or illegally. So what happens when still more people — many millions more — float across the Suchiate River and land in Chiapas? Our model suggests that this is what is coming — that between now and 2050, nearly 9 million migrants will head for Mexico’s southern border, more than 300,000 of them because of climate change alone.

“If we are going to die anyway,” he said, “we might as well die trying to get to the United States.”

The world can now expect that with every degree of temperature increase, roughly a billion people will be pushed outside the zone in which humans have lived for thousands of years

Without a decent plan for housing, feeding and employing a growing number of climate refugees, cities on the receiving end of migration can never confidently pilot their own economic future.

The United States refused to join 164 other countries in signing a global migration treaty in 2018, the first such agreement to recognize climate as a cause of future displacement. At the same time, the U.S. is cutting off foreign aid — money for everything from water infrastructure to greenhouse agriculture — that has been proved to help starving families like Jorge A.’s in Guatemala produce food, and ultimately stay in their homes. Even those migrants who legally make their way into El Paso have been turned back, relegated to cramped and dangerous shelters in Juárez to wait for the hearings they are owed under law.

There is no more natural and fundamental adaptation to a changing climate than to migrate. It is the obvious progression the earliest Homo sapiens pursued out of Africa, and the same one the Mayans tried 1,200 years ago. As Lorenzo Guadagno at the U.N.’s International Organization for Migration told me recently, “Mobility is resilience.” Every policy choice that allows people the flexibility to decide for themselves where they live helps make them safer.

what may be the worst-case scenario: one in which America and the rest of the developed world refuse to welcome migrants but also fail to help them at home. As our model demonstrated, closing borders while stinting on development creates a somewhat counterintuitive population surge even as temperatures rise, trapping more and more people in places that are increasingly unsuited to human life

the global trend toward building walls could have a profound and lethal effect. Researchers suggest that the annual death toll, globally, from heat alone will eventually rise by 1.5 million. But in this scenario, untold more will also die from starvation, or in the conflicts that arise over tensions that food and water insecurity will bring

America’s demographic decline suggests that more immigrants would play a productive role here, but the nation would have to be willing to invest in preparing for that influx of people so that the population growth alone doesn’t overwhelm the places they move to, deepening divisions and exacerbating inequalities.

At the same time, the United States and other wealthy countries can help vulnerable people where they live, by funding development that modernizes agriculture and water infrastructure. A U.N. World Food Program effort to help farmers build irrigated greenhouses in El Salvador, for instance, has drastically reduced crop losses and improved farmers’ incomes. It can’t reverse climate change, but it can buy time.

Thus far, the United States has done very little at all. Even as the scientific consensus around climate change and climate migration builds, in some circles the topic has become taboo. This spring, after Proceedings of the National Academy of Sciences published the explosive study estimating that, barring migration, one-third of the planet’s population may eventually live outside the traditional ecological niche for civilization, Marten Scheffer, one of the study’s authors, told me that he was asked to tone down some of his conclusions through the peer-review process and that he felt pushed to “understate” the implications in order to get the research published. The result: Migration is only superficially explored in the paper.

Our modeling and the consensus of academics point to the same bottom line: If societies respond aggressively to climate change and migration and increase their resilience to it, food production will be shored up, poverty reduced and international migration slowed — factors that could help the world remain more stable and more peaceful. If leaders take fewer actions against climate change, or more punitive ones against migrants, food insecurity will deepen, as will poverty. Populations will surge, and cross-border movement will be restricted, leading to greater suffering. Whatever actions governments take next — and when they do it — makes a difference.

El Paso is also a place with oppressive heat and very little water, another front line in the climate crisis. Temperatures already top 90 degrees here for three months of the year, and by the end of the century it will be that hot one of every two days. The heat, according to researchers at the University of California, Berkeley, will drive deaths that soon outpace those from car crashes or opioid overdoses. Cooling costs — already a third of some residents’ budgets — will get pricier, and warming will drive down economic output by 8%, perhaps making El Paso just as unlivable as the places farther south.

“If we don’t develop a different attitude,” he said, “we’re going to be like people in the lifeboat, beating on those that are trying to climb in.”