Fifteen years ago electric power generation was the largest source of US greenhouse gas emissions. Now the power sector is leading the shift to a clean energy economy.

Russia is attempting to claim more of the Arctic seabed – an area rich in oil, gas and minerals – and its fleet of icebreakers is helping shipping expand. The US needs some creative ideas to catch up.

Researchers at Harvard have designed new, highly selective tools that can add or remove sugars from a protein with no off-target effects, to examine exactly what the sugars are doing and engineer them into new treatments for “undruggable” proteins.

Scientists need to know how much we can rely on the land to offset our emissions.

A review of the state of Britain's native woods and trees finds only 7% are in good condition.

The US electricity grid is actually five regional grids, and it's hard to share power between them. A macrogrid could bridge the gaps, making electricity cheaper and more reliable.

Environmental campaigners dub the 1,572 locations across Wales "ticking time bombs".

Long-term "ripple" effects of wildfires may not surface until months or years after the flames are extinguished, an expert explains.

A Harvard study has confirmed that stress can lead to hair loss.

All the ways plants, animals, insects and the bacteria around us can be beneficial to human health.