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Plastic oceans: What do we know?

As England prepares to introduce a charge for plastic bags - long after many other countries - David Shukman catches up on the latest research into plastic in the oceans.

1 October 2015
David Shukman Science editor

Martian water streaks present exploration challenge

The immediate reaction of many to Monday's Mars announcement from Nasa on the existence of liquid water flows will be to want to go and investigate them. But that is easier said than done.

29 September 2015
Jonathan Amos Science correspondent

Warming tempts China in from the cold

China has signalled its desire to tackle climate change - but it seems to want to keep a foot in both camps, says Matt McGrath.

25 September 2015
Matt McGrath Environment correspondent

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