UN Secretary General Ban Ki-moon, racing driver Sebastian Vettel and Chinese artist Ai Weiwei have all danced to this song: Gangnam Style. Also on the show: Not only are oil companies in the Niger Delta rare polluting the water and the ground; by flaring the byproduct of oil production, natural gas, they're poisoning the air with heavy metals and greenhouse gases.
Nigeria is one of the countries with the largest reserves of crude oil worldwide. About 80 percent of the country's income comes from the export of oil and natural gas. In Port Harcourt, flares burn day and night. There are more than 120 gas flares in the Niger Delta.
Here, natural gas that bubbles up during oil extraction is burned. It's a cheap way of getting rid of an undesired byproduct. Elsewhere, flaring has long been banned, because it releases greenhouse gases and carcinogenic heavy metals.
It's one of the most successful pop videos of all time. "Gangnam Style" has received more than 620 million clicks on YouTube.
South Korean rapper and dancer PSY's recipe for success is "dress classy, dance cheesy." Mindless, flashy and cheerful, it's a mixture that has been delighting people all over the world. There are now also hundreds of YouTube videos in which people do their own versions of Gangnam Style.
The metropolitan area of La Paz is expected to grow to 8 million people in the coming twenty years. Water from the mountains is already barely sufficient to supply the Bolivian capital during dry seasons.
Because of climate change, rainy seasons can no longer be reliably calculated. To ensure an adequate long-term supply of clean water for the region, which lies at an altitude of 4000 meters above sea level, water management around the six Andean glaciers has to be adjusted to suit the climatic changes.
Foreign troops are preparing to leave Afghanistan, but the country is far from pacified. That makes projects that create jobs all the more important.
Patrick, James, Steve and Ernesto the cat live together in a typical terraced house in Liverpool.
As doctors, Patrick, James and Steve have little leisure time, so they're glad when they can watch a little football in peace and quiet at the weekend.