Driverless car makers in the US have been asked to sign up to a 15-point plan that aims to make the vehicles safe to use on public roads.

Physicists have set a new bar for quantum teleportation - transferring information from one place to another without anything physically travelling between the locations.

Any child or teenager sending explicit images or messages on texts and emails is cause for concern and should be monitored, new guidelines for schools and health professionals in England advise.

The US Army is working on a new hand grenade for the first time in 40 years.