LifeControversial fossils suggest life began to move 2.1 billion years ago Most biologists think lifeforms evolved the ability to move around about 600 million years ago – tiny burrows in 2.1-billion-year-old rocks challenge the idea News
LifeCore set of genes explain why some animals stick to one mate at a time Across a wide range of species, from mice to fish, a common set of genetic changes appear to be linked to monogamous behaviour News