BBC

The animals have been getting fishing nets stuck to them or rings trapped on their necks.

The delights of chocolate were first discovered in the Amazon rainforest about 5,000 years ago.

A Powys captive breeding project aims to give water voles a fighting chance of a revival.

A new study shows that rising temperatures drive the disappearance of mountain-top bird species in Peru.

Urban areas need to cherish wetlands as a natural defence against flooding, experts warn.

Trains that emit pure water could be in the UK by the "early 2020s", according to the government.

The chancellor says councils in England will get an extra £420m in his Budget to fix potholes.

The transport secretary says the government will back major development on the Oxford-Cambridge arc.

"Water cooler moment" as greener cooling idea is scaled up to help chill homes and buildings.

Work begins to exhume thousands of skeletons to make way for HS2 construction.

Some 45,000 skeletons are being removed to make way for a new station terminus.

Climate advisors say coastal communities must "get real" about the possibility of 1m sea level rise.

When the dinosaur-killing asteroid struck Earth, it made billions of tonnes of rock move like a fluid.

Only half of children in the study woke up with traditional alarms.

A new US study says that several low-cost technologies can be deployed right now to limit global warming.

Kurtis Baute spent 15 hours in an airtight dome to raise awareness about climate change.

Caroline Lucas MP says that onshore wind energy is the cheapest. What are the figures behind her claim?

The New Caledonian birds have surprised scientists once again with remarkable problem-solving skills.

Plastic items such as cutlery and straws would be banned in the EU under plans approved by MEPs.

The harpoon and axes were made from red deer antler by hunter-gatherers in Highlands in the Mesolithic period.