A small sponge-like implant that can mop up cancer cells as they move through the body is developed by US researchers.

Child mortality has fallen by more than 50% since 1990, a report by the World Health Organization and UN children's organisation Unicef says.

A new computer model predicts that multi-bed hospital wards increase bacterial hand contamination by 20% compared with single-bed wards.

As they prepare a major trial of the idea, UK scientists say that starting school at 10:00 could have huge benefits for teenagers because it better matches their “body clock".

People might be able to contract Alzheimer's during certain medical procedures, just like they can catch the brain disease CJD, say researchers.