Astonishing algae bloom found in Arctic

NASA scientists say they've made a discovery in the Arctic Ocean 'as dramatic and unexpected as finding a rainforest in the middle of a desert'.

Ocean seeding wouldn't halt climate change, says team

Seeding the oceans with iron to combat global warming might be ineffective as well as risky, it seems.

Foundation of ocean food chain in decline

The tiny algae known as phytoplankton - which form the basis of the entire marine food chain - have been disappearing globally over the last hundred years.