Coral reef 'oases' offer glimmer of hope

The identification of small 'oases' in the world's oceans, where corals appear to be thriving, could offer vital insights in the race to save one of the world's most threatened ecosystems.

Checking China's pollution by satellite

Air pollution has smothered China's cities in recent decades. In response, the Chinese government has implemented measures to clean up its skies. But are those policies effective? Now an innovative study co-authored by an ...

Power starved Nigeria on the brink after six plants closed

Nigerian officials were working Monday to prevent the "collapse" of the electric grid after they had to close down six power plants following a pipeline failure and "technical issues" at Shell gas wells.

page 1 from 12