Israeli writer Yuval Harari claims that the world is in the middle of an artificial intelligence war led by the USA and China. According to Harari, countries that cannot keep up with the race will either go bankrupt or become colonial.

Meet the xenobots: Tiny living robots have been created using cells taken from frog embryos. Each so-called xenobot is less than a millimeter across, but one can propel itself through water using two stumpy limbs, while another has a kind of pouch that it could use to carry a small load.