Google has unveiled a more diverse scale of skin tones to develop its artificial intelligence systems. The new Monk Skin Tone Scale, named after Harvard University professor Dr Ellis Monk, has 10 skin tones. Google says it will replace outdated skin tone scales which have a bias towards paler skins. The tech company claim it will be used to improve products like search and photos. Machine learning, a type of AI, is used by a lot of technology including cameras which recognise a face to unlock a phone or when your photos are categorised automatically. But to get to this point researchers need to train the technology so that it can recognise a wide range of people.

A robot on Mars has bitten off more than it can chew while collecting rock samples on the red planet. Perseverance was sent to Mars last year by US space agency Nasa to find out more about our nearest planetary neighbour. The Mars rover has been successfully collecting small samples of rock to bring back to researchers on Earth. But in late December, it ran into trouble after pebbles fell into its machinery, causing it to malfunction. Nasa's Perseverance begins its Martian journey Nasa reveals new Mars rover name!

Artificial intelligence - or AI for short - is technology that enables a computer to think or act in a more'human' way. It does this by taking in information from its surroundings, and deciding its response based on what it learns or senses. It affects the the way we live, work and have fun in our spare time - and sometimes without us even realising. AI is becoming a bigger part of our lives, as the technology behind it becomes more and more advanced. Machines are improving their ability to'learn' from mistakes and change how they approach a task the next time they try it.