Environment

A tree-dwelling carnivore from the cloud forests of South America heads this year’s top 10 list and shows that not all of the “big” species are already known or documented.

Six challenges, five years, £10m: the Longitude Prize of 1714 is being revived in an attempt to solve one of humanity’s “biggest challenges”. And the public gets to vote on what to tackle.

In February, Channel 4 News reported from Ayebridges Avenue, near Staines, as residents reeled under the devastation of flooding. Three months on, many of them have still not returned.

Time to move to Russia? A Global Sustainability Institute report says the UK could run out of oil, coal and gas supplies in just five years. See how the UK compares with the other top 10 economies.

At the launch of a UN climate change report, a leading expert admits dealing with climate change is not a free lunch – but adds that, for the sake of our future, it is a lunch worth buying.

A House of Lords committee report has said it is “absolutely shocked” at the scale of food waste in the EU and calls on supermarkets, farmers and individuals to do more to stop it.

The broken Dawlish rail link, which became one of the defining images of the storms and flooding that hit parts of southern Britain in February, reopens in time for the Easter holidays.

Record levels of air pollution have caused a surge in 999 calls, the London Ambulance Service says, with people reporting breathing difficulties, asthma and heart problems.

Fly around London at high-speed to see how the UK capital is smothered under a blanket of smog – video

Parts of the UK may be smothered by air pollution, but it could be worse. Check out how some of our “landmurks” would look if it was as bad as it is in east China, one of the world’s smoggiest spots.

As reports emerge suggesting the Conservatives may remove support for wind farms from their next manifesto, Channel 4 News tracks the ups and downs of their stormy relationship on green issues.

Jon Snow is in Greenland looking at climate change with the UN Secretary General Ban Ki-Moon, who believes that this is the greatest threat to mankind’s capacity to live together in harmony.

“What we’re seeing behind me is Greenland’s polar ice cap – and that is at the very centre of concern about climate change”: Jon Snow on the huge global threat of the melting polar ice cap.