For over 200 years, the world has weighed things in kilograms. And for around 130 years, the weight of a kilogram has been based on one piece of metal. That is about to change.
A 69-year-old Dutch man who works on TV has gone to court with an unusual request. He wants to be allowed to take 20 years off his age.
California is battling some of the worst wildfires in its history. Dry weather and strong winds have created monster fires more deadly than anything the state has seen before.
Stan Lee, who helped create Spiderman, the X-Men, Iron Man, the Incredible Hulk, Black Panther, and many other comic book heroes, has died. He was 95.
Bill Gates is one of the world's richest men. He and his company, Microsoft, helped make computers cheap and popular. So what's he interested in now? Toilets.
Today marks 100 years since the end of World War I. One hundred years ago may seem impossibly far in the past, but it is still important to remember the lessons of that war today.
The Museum of Natural History in London holds a yearly contest for the Wildlife Photographer of the Year. There is also a contest for people under 18. Here are some of this year's best pictures.
The Royal Australian Mint has started Australia's first coin hunting contest. They are hoping Australians will try to collect three special coins that could allow them to win a prize.
In late October, scientists controlling submarines deep under the sea came across something unusual: a huge group of around 1,000 octopuses gathered on rocks, protecting their eggs.
The US election yesterday drew more voters than any recent midterm. Republicans held the Senate, but Democrats took the House as people of different backgrounds won races in this election of "firsts".