Scientists hope to harness coral's natural defence against the sun's harmful ultraviolet rays to make a sunscreen pill for humans.

Female marmots born in litters that are mostly male become "tom boys", behaving in ways that are more typically male, say scientists.

Salmon in the Thames are more likely to be fish that have "strayed" from nearby rivers rather than a result of a multi-million pound restocking effort, a study suggests.

The current most common way to board passenger planes is among the least efficient - and boarding times could be halved, experiments show.

The US space agency's Jupiter-bound Juno probe looks back and pictures Planet Earth.

Researchers in Germany have developed a microchip sensor that can be implanted close to a tumour to monitor its growth.