There are more and more wind turbines in Germany, and one challenge is keeping them clean. In western Germany, a helicopter has been developed to this end - it's cheaper and more efficient than cleaning by hand.
Trash bags have been deposited at Camp Two on the world's highest peak. The site - and a whole lot of garbage - was abandoned two years ago after a series of earthquake-triggered avalanches.
The UN World Tourism Organization likes to cite this Central American country between the Caribbean and the Pacific as a good example of sustainable tourism. Is that justified? DW reporter Lukas Stege investigates.
Louisiana residents begin a huge post-flood clean up as California's governor declares a state of emergency over the latest wildfires. The natural disasters follow what NASA says was the hottest month on record.
Hamburg's mayor has defended police tactics to put down protests during the G20 conference. Officers used water cannons, pepper spray and tear gas to disperse demonstrators, some of whom threw bottles or burned cars.
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