The way the body can track the passing of the seasons in a "chemical calendar" has been discovered by scientists.

Scientists say they have discovered a genetic clue to why some breast cancers relapse, which could lead to better treatment.

China's President Xi Jinping will make a key pledge on climate change as he meets US President Barack Obama in Washington, say US officials.

A lack of investment will hamper efforts to ensure Africa's farmers can feed future generations in the face of a changing climate, a report warns.

North Sea Cod is taken off the Marine Conservation Society's list of fish to avoid eating, although it should be only an "occasional treat", it says.

Atmospheric levels of a little known by-product from diesel engines are up 70 times higher than expected according to a study.

Visitors to London's Natural History Museum are being given the opportunity to see 3D prints of the sensational new Homo naledi fossils.

Energy company Drax has pulled out of a £1bn carbon capture project because of the government's decision to reduce subsidies for renewable energy.