Poachers and economic growth are endangering the tiger's livelihood. In Bangkok, police and customs authorities from countries home to wild tigers have agreed to tighten controls to curb the trade in tiger parts.
Sustainable fishing practices could bring the industry an extra 3.2 billion euros, says a new study.
Despite some countries' plans for new nuclear power plants, the nuclear heyday looks to be over.
China announced on Monday it would stop Chinese airlines from complying with an EU scheme to impose charges on carbon emissions. But Beijing says it's willing to negotiate a solution.
International airlines have railed against the inclusion of aviation in the European Union's emissions trading scheme, but an industry study says US carriers could make billions off the system thanks to free permits.
The inclusion of airlines into the EU's Emission Trading Scheme (ETS) hasn't gone down well with carriers based outside the bloc. China and the US oppose the measure, but their legal prospects to stop it look bleak.
The EU's top court has dismissed a challenge to Europe's carbon market brought by US airlines, upholding a law that will force foreign carriers to comply with rules that extend emissions trading to aviation in 2012.
Take an interactive journey into the jungles of Guyana and meet some of the people living there.
Scientists have a new way to purify water without chemicals. It could be used to treat wastewater.
Climate Change in the Arctic and around the globe.
Check out stories from our weekly environment show.
DW reporter Peter Hille is crossing the African continent - on his bicycle. Check out his blog.
