BBC

As the UK hosts a key climate summit, the government announces an end to funding for overseas oil and gas.

Sir Richard Branson's Virgin Galactic embarks on the first crewed flight of its rocket-powered tourist plane.

A further 119 skulls of men, women and children are found near a famous Aztec temple in Mexico City.

Lake sediments on remote Marion Island tell the story of the Southern Hemisphere's westerlies.

The world has seen the biggest annual fall in CO2 emissions since World War Two, say researchers.

The new Sentinel satellite to track global sea-level rise is in excellent shape, say space officials.

A letter has been signed by singer Ellie Goulding and Hollywood stars Emma Watson and Emma Thompson.

European bison take a step back from the brink, but there is bad news for other animals and plants.

Five years after the Paris climate deal was agreed, we look at the promises made by key countries.

The US entrepreneur's latest Starship rocket prototype impresses in flight, but crashes on landing.

Nasa has announced 18 astronauts who will travel to the Moon under the agency's Artemis programme.

The mass of human-made objects will for the first time likely exceed that of living things in 2020.

The world's wealthiest will need to limit emissions if the world is to avoid dangerous warming.

The UK can make major cuts to carbon emissions more cheaply than previously thought.

Zhou Chengyu, 24, has been lauded on social media for her work as the project's youngest commander.

The RAF has now released footage from its low-level reconnaissance flight over the giant A68a.

Another key milestone is reached in the ExoMars Rosalind Franklin rover mission to the Red Planet.

For the first time, China and Nepal agree an official height for the world's highest peak.

A project on abandoned spaces reclaimed by nature has won the 2020 Earth Photo competition.

Members of the researcher's AI ethics team have published a letter challenging the firm's account.