BBC

Crowds have gathered to watch the 'once in a lifetime' eclipse in a number of countries.

We look back at some of the major stories of the year in science and the environment.

Hundreds of people affected by severe flooding four years ago have sought mental health support.

More than a million birds are trapped every year in the British Isles by volunteers.

Nasa wants to send humans to Mars one day, but do we have the engines to get us there?

A study attempts to assess the devastation caused by the invasive emerald ash borer in US forests.

British sign language is receiving an astronomical update thanks to a unique collaboration between a space scientist and a group of deaf astronomers.

The discovery was made by scientists at a 4,000-year-old archaeological site in the Hebrides.

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.