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it is particularly worrying how far the coronavirus is spreading within the political elite in countries where many senior politicians are over 60, making them especially at risk. In Burkina Faso, a country that has experienced more than its fair share of instability in recent years—and which is currently struggling against an insurgency—the ministers of foreign affairs, education, the interior, and mines have all tested positive.

In Nigeria, one of the most economically and politically important countries on the continent, Abba Kyari, the chief of staff to 77-year-old President Muhammadu Buhari, has come down with the disease. Although media outlets have reported that Buhari tested negative, this has not stopped damaging rumors that the often ill president has been incapacitated from circulating in Twitter.

The world should also be paying close attention to Iran, where media censorship has obscured the extent of the crisis. So far, two vice presidents and three cabinet officials are known to have gotten the virus. It is also estimated that 10 percent of parliament and many prominent figures within the Islamic Revolutionary Guard Corps are sick—including a senior advisor to the 80-year-old supreme leader, Ayatollah Ali Khamenei, raising questions about his health.

A leadership crisis is just one of the potential sources of political instability the coronavirus could spark. Others include the risk of popular unrest and the debt crises that will soon engulf many countries around the world. Along with the fact that some of the main providers of foreign aid are now preoccupied with their own financial crises, there is a serious risk that politically and economically weak states will face a perfect storm of elite deaths, debt, mass unemployment, and social unrest

In countries where poverty is widespread, health systems are weak, and the cost of food is high, citizens are already under intense financial pressure. Despite earning the least, those who live in slum areas around capital cities often have to pay more for access to water and food than those who have valuable properties in the city centers. While the cramped conditions of slum living make it implausible to self-isolate, limited and inconsistent income make it impossible to buy in bulk—or to stay home for weeks on end without working and risk starvation. For many of the poorest people in the world, hunger is just a few days away

Already, there have been sporadic incidents of unrest in a number of countries, including prison protests in Italy. Meanwhile, heavy-handed efforts to enforce the curfew threaten to further erode public confidence in the government and the security forces. There are reports of widespread human rights abuses being committed in Kenya and South Africa, where the police have been using water cannons and rubber bullets to enforce the lockdown.

Unless the deferral of debt goes hand in hand with debt cancellation and long-term rescheduling, the end of the coronavirus crisis could be followed by a series of economic collapses across the developing world. In turn, this will undermine the ability of governments to provide affordable fuel and food, further increasing the risk of public unrest.

Civil wars, political instability, and poverty kill millions of people every year. These deaths rarely elicit the kind of comprehensive media coverage that COVID-19 has received, but they are no less important. It is possible to prevent the worst political consequences of the coronavirus but only if governments and institutions act now. Wealthy nations must increase their aid budgets rather than cut them, and international organizations must anticipate and work to avoid political crises more proactively than ever before. That is the only way to collectively survive the present in a way that does not undermine the future.

In 2007, Congress placed language in the National Defense Authorization Act that requires the military to consider effects of climate change on facilities, capabilities, and missions

The challenge with integrating climate change hazards with military planning has been that “climate change” is at the same time too general a term of reference yet is also too limiting

Many systems rely on predictable delivery of water, and too much or too little at the wrong time can spell catastrophe for agriculture, power, transport, or other critical systems linked around the globe

empirical cases of conflict between states directly over water supplies are historically rare

the Chinese drive for water security may spark a series of actions that others may interpret as threats even while inside China they may be technical responses to very real risks

The regional security difficulty lies not only in Tibetan politics, but in the fact that the Yarlung-Tsangpo becomes the Brahmaputra once it crosses into India in Arunachal Pradesh, a territory disputed by India and China and heavily militarized. Diversions affecting the Brahmaputra would imperil India's own water security, including hydropower and irrigation projects, and would have further impacts downstream in Bangladesh. Although China may see its water projects as increasing its own security, India and Bangladesh view the Chinese actions as a direct threat to their national security. Specifically, China's actions have the potential to increase the risk of water-related population stresses, cross-border tension, and migration and agricultural failures for perhaps a billion people in India and Bangladesh, and its actions may be interpreted as a security threat by India

through 2040, the best solutions to water problems are expected to be found in improved management strategies such as pricing, allocation decisions, and addressing international trade in “virtual water”—“water consumed in the manufacturing or growing of an export product”

The connections between extreme heat/drought in Russia in the summer of 2010 and the subsequent Arab Spring revolts in late 2010 are an example of where changes in one system (in this case, water/moisture for food production) may contribute to existing instability in a far different geographical region.

The topic of environmental security also raises questions about what or who is driving policy priorities and how science is (mis)communicated to policymakers.

Complex risk assessments must take into account the multidimensional and interdisciplinary nature of the strategic environment. Providing adequate resources for these complex assessments requires knowledge not only of climate and weather systems, but of particular geographical, cultural, and socioeconomic factors that make environmental hazards unique to each region and community

Martin O’Malley was mocked for suggesting that a climate-change-intensified drought in the Levant—the worst drought in 900 years—helped incite the Syrian Civil War, thus kickstarting the Islamic State. The evidence tentatively supports him. Since the outbreak of the conflict, some scholars have recognized that this drought pushed once-prosperous farmers into Syria’s cities. Many became unemployed and destitute, aggravating internal divisions in the run-up to the war

Scheffran underlined these climate connections but declined to emphasize them. “The Syrian War has so many complex interrelated issues—and most of them are political and economic—that the drought is just one contributing factor to the instability in the region,”

it’s all about the exogenous shock. We were all interested in, to what extent does a big event like a flooding or a drought undermine society, or trigger a conflict outbreak?

Heatwaves, droughts, and other climate-related exogenous shocks do correlate to conflict outbreak—but only in countries primed for conflict by ethnic division. In the 30-year period, nearly a quarter of all ethnic-fueled armed conflict coincided with a climate-related calamity. By contrast, in the set of all countries, war only correlated to climatic disaster about 9 percent of the time

climate disaster will not cause a war, but it can influence whether one begins

Models predict that northern Africa and the Levant, both already drought-prone, will dry out significantly over the course of the century. On the phone, Schleussner also cited southern Africa and south-central Asia as regions to watch. (It’s no coincidence that some of the largest, longest wars this century have occurred in those places.)

a drought-and-flood-fueled armed conflict near the Mediterranean Basin could send people toward Western Europe in the hundreds of millions

“I wouldn’t say that there would be a mass migration to Europe, but I would expect to see a large number of people being displaced within Africa,”

There is literally, in legal parlance, no such thing as an environmental refugee,” says Edward Carr. “To meet the international standard for refugee, a changing environment is not a forcing. It doesn’t count.”

When would you attribute the decision to move to changes in the climate? Does a place have to be dry for five years? For 10 years? Does someone have to have three children die, and then they decide to move?

Climate change could push Western politics toward demagoguery and authoritarianism in two ways, then. First, it could devastate agricultural yields and raise food prices; destroy coastal real estate and wash away family wealth; transform old commodities into luxury goods. Second, it could create a wave of migration—likely from conflict, but possibly from environmental ruination—that stresses international reception systems and risks fomenting regional resource disputes.

it could erode people’s sense of security, pushing them toward authoritarianism

Like the CEO in the 1950s who predicted that America would see flying cars and three-day workweeks by the year 1999, I’ve assumed that every ongoing trend line can be extrapolated out indefinitely. They can’t. The actual future will be far stranger.

climate change must be mitigated with all deliberate speed. But he also suggests certain cultural mechanisms. Some Americans may favor more restrictive immigration policies, but—in order to withstand against future waves of mass migration (and humanely deal with the victims of climate change)—racist fears must be unhooked from immigration restrictionism. In other words, as a matter of survival against future authoritarians, white supremacy must be rejected and defeated.

Improving the United States’s immune response to authoritarian leadership—a response that could be repeatedly tested in the century to come—can follow from weaving its civic fabric ever tighter. I don’t know what this will look like, exactly, for every person. But here are some places to start: Volunteer. Run for local or state office. Give to charity (whether due to religion or effective altruism). Organize at work. Join a church or a community choir or the local library staff. Make your hometown a better place for refugees to settle. Raise a child well.

climate realists have always split their work between mitigation—that is, trying to keep the climate from getting worse—and adaptation—trying to protect what we already have

As leaders understand the limits of allies’ backing, reality sinks in. Saudi Arabia, initially encouraged by the Trump administration’s apparent blank check, flexed its regional muscle until a series of brazen Iranian attacks and noticeable U.S. nonresponses showed the kingdom the extent of its exposure, driving it to seek a settlement in Yemen and, perhaps, de-escalation with Iran.

another trend that warrants attention: the phenomenon of mass protests across the globe. It is an equal-opportunity discontent, shaking countries governed by both the left and right, democracies and autocracies, rich and poor, from Latin America to Asia and Africa. Particularly striking are those in the Middle East—because many observers thought that the broken illusions and horrific bloodshed that came in the wake of the 2011 uprisings would dissuade another round.

In Sudan, arguably one of this past year’s better news stories, protests led to long-serving autocrat Omar al-Bashir’s downfall and ushered in a transition that could yield a more democratic and peaceful order. In Algeria, meanwhile, leaders have merely played musical chairs. In too many other places, they have cracked down. Still, in almost all, the pervasive sense of economic injustice that brought people onto the streets remains. If governments new or old cannot address that, the world should expect more cities ablaze this coming year.

More people are being killed as a result of fighting in Afghanistan than in any other current conflict in the world.

In 2018, aggressive international intervention in Yemen prevented what U.N. officials deemed the world’s worst humanitarian crisis from deteriorating further; 2020 could offer a rare opportunity to wind down the war. That chance, however, is the product of a confluence of local, regional, and international factors and, if not seized now, may quickly fade.

Perhaps nowhere are both promise and peril for the coming year starker than in Ethiopia, East Africa’s most populous and influential state.

Mass protests between 2015 and 2018 that brought Abiy to power were motivated primarily by political and socioeconomic grievances. But they had ethnic undertones too, particularly in Ethiopia’s most populous regions, Amhara and Oromia, whose leaders hoped to reduce the long-dominant Tigray minority’s influence. Abiy’s liberalization and efforts to dismantle the existing order have given new energy to ethnonationalism, while weakening the central state.

Burkina Faso is the latest country to fall victim to the instability plaguing Africa’s Sahel region.

Burkina Faso’s volatility matters not only because of harm inflicted on its own citizens, but because the country borders other nations, including several along West Africa’s coast. Those countries have suffered few attacks since jihadis struck resorts in Ivory Coast in 2016. But some evidence, including militants’ own statements, suggest they might use Burkina Faso as a launching pad for operations along the coast or to put down roots in the northernmost regions of countries such as Ivory Coast, Ghana, or Benin.

The war in Libya risks getting worse in the coming months, as rival factions increasingly rely on foreign military backing to change the balance of power. The threat of major violence has loomed since the country split into two parallel administrations following contested elections in 2014. U.N. attempts at reunification faltered, and since 2016 Libya has been divided between the internationally recognized government of Prime Minister Fayez al-Sarraj in Tripoli and a rival government based in eastern Libya. The Islamic State established a small foothold but was defeated; militias fought over Libya’s oil infrastructure on the coast; and tribal clashes unsettled the country’s vast southern desert. But fighting never tipped into a broader confrontation.

In April 2019, forces commanded by Khalifa Haftar, which are backed by the government in the east, laid siege to Tripoli, edging the country toward all-out war.

Emirati drones and airplanes, hundreds of Russian private military contractors, and African soldiers recruited into Haftar’s forces confront Turkish drones and military vehicles, raising the specter of an escalating proxy battle on the Mediterranean

A diplomatic breakthrough to de-escalate tensions between the Gulf states and Iran or between Washington and Tehran remains possible. But, as sanctions take their toll and Iran fights back, time is running out.

After falling off the international radar for years, a flare-up between India and Pakistan in 2019 over the disputed region of Kashmir brought the crisis back into sharp focus. Both countries lay claim to the Himalayan territory, split by an informal boundary, known as the Line of Control, since the first Indian-Pakistani war of 1947-48.

As world leaders pat themselves on the back for "destroying ISIL" in Syria, the group is openly building up its strength in Africa. 

Mali, too, has long suffered insecurity which has allowed the country to become a playground for groups like ISIL and al-Qaeda. Earlier this month at least 53 soldiers and a civilian were killed in an ISIL attack on a military post in northeast Mali. The attack came a month after two similar attacks killed at least 40 soldiers near the country's border with Burkina Faso. 

Burkina Faso is now stuck in a vicious cycle where the problems that allowed armed groups like ISIL to infiltrate the country are being exacerbated by their presence, while the resulting desperation is causing more people to join them.

If effective measures that address not only the ongoing insurgency but the core problems that allowed it to prosper in the region are not implemented right away, the destruction and suffering caused by ISIL in Syria and Iraq will be repeated in the Sahel. More and more people will try to escape their predicament by embarking on deadly journeys towards Europe. A few will make it there, while tens of thousands of others will either die horrible deaths at sea or languish in outrageous refugee camps in Africa.

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.”

“Perhaps the most sobering political development as the protests reached the one-week mark was a growing inclination among some prominent elected and security officials to frame the civil unrest in the language of armed conflict,”

The killing, and the Trump administration’s response to the upheaval, risk further eroding the “global standing and credibility” of the US “particularly when it comes to condemning repression or brutality perpetrated by other governments”, the Crisis Group said.

On Wednesday, the UN high commissioner for human rights, Michelle Bachelet, implored the US to confront “endemic and structural racism” and address the “deep-seated grievances” at the heart of the protests.  She assailed the president’s characterization of protesters as “terrorists” and condemned the “unprecedented assault on journalists”.  “The anger we have seen in the US, erupting as Covid-19 exposes glaring inequalities in society, shows why far-reaching reforms and inclusive dialogue are needed there to break the cycle of impunity for unlawful killings by police and racial bias in policing,”