Swarms of tiny ROBOTS could be injected into our bodies to treat bleeds in the brain, scientists say - in breakthrough that could 'open new frontiers in medicine'

Tiny magnetic robot armies could treat bleeds in the brain and'open new frontiers in medicine', experts have found. Researchers have created nanoscale robots – each about a twentieth of the size of a red blood cell – that can be remotely guided as a swarm. It is hoped they could enable precise, low-risk treatment of brain aneurisms, which cause around half a million deaths a year globally. The condition – a blood-filled bulge on a brain artery that can rupture and cause fatal bleeds – can also lead to stroke and disability. The team, co-led by the University of Edinburgh's School of Engineering, carried out lab tests using models of aneurisms and rabbits.