BBC

The amount of food needed to feed the world's population by the end of the century could increase by almost 80%, a study suggests.

Boeing's Starliner spacecraft has returned early after a timing error meant it failed to dock with the International Space Station.

Justin Rowlatt lands in a dazzling white and blue world to join scientists checking up on Antarctic ice.

These three teenagers are passionate about issues they see around them, and are training to be activists at The Advocacy Academy in London.

The top court upholds a ruling requiring 1990 levels to be cut by at least 25% by the end of 2020.

The test flight has a dummy on board but, if successful, astronauts are due to start using the craft from 2020.

Camille Schrier, who wowed judges with a science experiment, said she aims to "break stereotypes".

If the Starliner vehicle's demonstration flight goes well, crew could start using it next year.

Fossil trees, dating back 386 million years, have been found at an abandoned quarry in New York.

The original series sets out to explain and demystify artificial intelligence technology.

Next year is expected to be another warm year, extending the series of the hottest on record.

Modou Fall had to get creative to grab people thinking more about plastic waste in Senegal.

The Mekong river is being damaged by sand extraction, adding to calls for limits on sand usage.

An ancient ancestor of modern humans survived into relatively recent times in South-East Asia.

Ship owners announce plans for a $5bn fund to design zero-emissions vessels.

The comments from the UK's official climate come ahead of a global climate conference in Glasgow.

Ancient DNA extracted from a tooth print in ancient "chewing gum" reveals new clues about our ancestors.

Purussaurus mirandai could grow to 10m in length and was able to move on land, scientists believe.

The Cheops space mission will get beyond just counting worlds to start describing their properties.

Kigali residents demand compensation as hundreds of houses vulnerable to flooding are knocked down.