Planting trees will save the climate. At least, that’s the claim of many environmental organizations. As a result, massive reforestation efforts are taking place worldwide. But just how effective are these campaigns?

Around the world, more and more people are developing Parkinson's disease. Many of those affected have chosen a supposedly healthy life among orchards or vineyards in the countryside. Is the disease related to the use of pesticides?

UN climate experts say our future is threatened by rising global temperatures. We are already experiencing more heat waves, forest fires and flooding. The In...

Mumbai is a city of contrasts. Here, the super-rich and slum dwellers live side by side. As more and more luxury skyscrapers go up, slums are forced to make way for them. Conflicts ensue. So what is life like, in a megacity with 20 million inhabitants?

China is building a huge digital surveillance system. The state collects massive amounts of data from willing citizens: the benefits are practical, and people who play by the rules are rewarded. Critics call it "the most ambitious Orwellian project in hu...