A study from US researchers suggests that friends are more genetically similar than strangers - to the same degree as fourth cousins.

Scores of giant African snails, still alive, have been seized by US customs agents at Los Angeles International Airport.

Greg Clark has a tough act to follow as the new science and universities minister, commentators say.

Europe's Rosetta probe acquires some sensational new images of its comet quarry, showing what appears to be two distinct parts in contact with each other.