A millipede-like creature from 550 million years ago is among the earliest examples of this.

The bill has passed its stages in the House of Commons and now heads to the House of Lords.

On a frantic day that saw Boris Johnson try and fail to call an election, here are the headlines.

Italian 24th seed Matteo Berrettini edges a thrilling five-set match against Gael Monfils to reach a first Grand Slam semi-final at the US Open.

President Trump insisted Alabama was in the storm's path, despite forecasters disagreeing.

Heavy rains batter the Carolinas coast, as rescue work continues in the devastated Bahamas.

A gang that lured victims from Poland to the UK is believed to have enslaved around 300 people.

Greenlanders talk about the impact of their country's giant ice sheet melting and what they can do about it.

Luc Van Damme was two when taken from his Rwandan mother under a colonial ban on mixed families.

A priest held hostage by Islamists in the Philippines endured four months under bombardment. Then he escaped.

Well-wishers on Facebook turned detective to return the letters to the teenage sweethearts.

A mobile security firm carries out a research investigation to test the popular conspiracy theory.

Why an "OK" hand gesture by a girl in a widely-shared video has rattled China's authorities.

The Beatles legend talks about writing a story book inspired by his grandchildren.

The San Francisco council said the gun-rights group 'incites gun owners to acts of violence'.

However, the benefits to the heart seem to outweigh the risks to the brain.

Racist incidents will 'hurt' efforts to bring more players and coaches from ethnic minorities into football at grassroots level, says Riz Rehman.

The parties agree not to hold up a bill ruling out no-deal, as Boris Johnson says the people must choose what Brexit they want.

The offer was made to the ship at the centre of an international row, the state department confirms.

Cases of the illness are on the rise worldwide and developed nations are seeing a resurgence.

Samsung's first folding smartphone gets a UK release 12 days after its launch in South Korea.