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"Over 40 million tonnes of electric and electronic waste (also known as e-waste) are produced worldwide every year. That is boundless heaps of refrigerators, computers, television sets, ovens, telephones, air conditioning units, lamps, toasters and other electric and electronic devices, with a total weight equal to seven times that of the Great Pyramid of Giza. "

"Throughout the 20th century, and continuing into the 21st century, governments have tried to develop the world's poor countries. Development efforts have sought to increase national income, lift poor people out of poverty and improve their quality of living. However, people have had different ideas about how to best develop poor countries.  This resource considers six of those approaches."

"The gardens are home to one of a growing number of azoteas verdes - or green roofs - that are springing up around Mexico City as part of the metropolis's efforts to purge its air of the pollution that has long been among its least-desired claims to fame."

"Have you heard of carbon trading?  Where a country or region sets a cap for its emissions, and then uses permit trading to seek out the cheapest cuts.  I'm guessing you have. But what about the carbon in trade?  The carbon that moves around the world in the form of fossil fuels and finished products. Heard of it? When we talk about carbon emissions we invariably talk about where emissions occur due to fossil fuel combustion.  But carbon moves around a lot.  Oil moves from the Middle East to Europe before being used and products purchased in the US are often made in China.  These movements have important implications for climate policy."

"A three-year review into the future of air travel around London is due to finish with the recommendation that a new runway be built at one of two existing airports. But while the capital gingerly edges towards airport expansion, other parts of the world are witnessing a massive airport building boom."

"You wash with it, you brush with it, you toast it, it's in 50% of what you buy - but what's the real story of palm oil? Use the interactive below to trace the journey of palm oil from the rainforest through to your kitchen cupboard"

"Fears over proposed refinery in southern city of Kunming attracts thousands of protesters"

"f you traverse the South American nation of Bolivia, from the heights of the Andes Mountains to the Amazon Jungle to the urban streets of Santa Cruz, you'll never once find a Big Mac or a McNugget. They don't exist there-and haven't for about a decade. McDonald's couldn't survive in the mountainous country, so in 2002 the global fast-food chain closed its last store."

"China's cabinet has outlined measures aimed at improving the country's air pollution problems, which have plagued many of its larger cities over recent years. One of the main measures, announced in state media over the weekend, is a target to reduce emissions from heavily polluting industries by 30% by the end of 2017. In statement after a meeting chaired by Premier Li Keqiang, the State Council said there would be "tough measures for tough tasks""

The index has been developed by the risk analysis company Maplecroft for governments, NGOs and business to use as a barometer to identify those countries which may be susceptible to famine and societal unrest stemming from food shortages and price fluctuations. This map shows the results of evaluating the availability, access and stability of food supplies in 197 countries, as well as the nutritional and health status of populations

"As online shopping explodes in Britain, helping to push traditional retailers such as HMV out of business, more and more jobs are moving from high-street shops into warehouses like this one. Under pressure from politicians and the public over its tax arrangements, Amazon has tried to stress how many jobs it is creating across the country at a time of economic malaise. The undisputed behemoth of the online retail world has invested more than £1bn in its UK operations and announced last year that it would open another three warehouses over the next two years and create 2,000 more permanent jobs. Amazon even had a quote from David Cameron, the prime minister, in its September press release. "This is great news, not only for those individuals who will find work, but for the UK economy," he said."

"Aerial footage, filmed by a drone operated by the Sumatran Orangutan Conservation programme, shows the extent of large scale deforestation in Sumatra, Indonesia. The Tripa swamp forest once boasted 60,000 hectares of forest, which was home to 2,000 orangutans. Now most of it has been destroyed to make way for palm oil plantations. Barely 200 orangutans survive"

"In a village 2500m high in the Indian Himalayas, life is changing. Many of the younger generation seek to chart a new course, different from those of their parents. This is one man's story of juggling responsibilities and fighting for dreams, both for himself and for his community."

"The Chinese authorities have set up 25 "baby hatches" across the country to allow parents to safely abandon their unwanted infants. They plan to establish many more over the coming months, despite criticism that they could encourage people to give up their babies. The hatches, which consist of an incubator and a delayed alarm, increase the chances of a baby surviving. Most of those abandoned have disabilities or serious illnesses."

"The population of an area changes as people move in and out of an area to work. For the workday population the usually resident population is re-distributed to their places of work, while those not in work are recorded at their usual residence. This map shows the percentage change, for 16-74 year olds, experienced in each area, as recorded by the 2011 Census. Hover over the map to explore the change in your area. "

"By Christmas Eve, the Philippines will have spent $1bn (£0.6bn) paying foreign debts in the seven weeks since typhoon Haiyan devastated much of the country. It will have spent a total of $8.4bn on foreign debt in 2013, and faces a further $8.8bn in 2014. While a little more than $100m has been pledged by international donors for relief work, more than 800 times that amount of money leaves the country every year to pay debts"

"Indonesia lost 840,000 hectares of forest in 2012 compared to 460,000 hectares in Brazil, despite its forest being a quarter the size of the Amazon rainforest"

"The world is becoming more and more interconnected. Globalization changes how people consume, work and live almost everywhere on the world. Today, many economic, political, cultural or ecological relationships are not explainable from a national perspective. At the same time, a controversial debate about the consequences of globalization has begun. But what are the main causes for globalization? In what areas it is most prominent? And who are the winners and looser of globalization? These are the questions this animated Video clip of the WissensWerte series deals with. "

"You hear the squeals of the pigs long before reaching a set of long buildings set in rolling hills in southern China. Feeding time produces a frenzy as the animals strain against the railings around their pens. But this is no ordinary farm. Run by a fast-growing company called BGI, this facility has become the world's largest centre for the cloning of pigs."