A single mutation around 30,000 years ago appears to be responsible for several traits common in East Asian peoples, from thicker hair to denser sweat glands.
The reason you (probably - let's not make assumptions here) don't live by an African lake and feed mainly on fish may be a single, ancient mutation.
The second of two highly-controversial academic papers on the H5N1 avian influenza has now been published, showing the virus is just four mutations away from an airborne version that could pass from human to human.
Pests are adapting to genetically modified plants designed to kill them, raising doubts over the future of biotech crops.
Dutch researchers have created a virus in the lab that could wipe out half the human race.
Japanese researchers say they've created a mouse that sings like a bird. They say the development could shed light on the evolution of human language - and, they suggest, lead to the creation of a talking mouse.
Tibetans' adaptation to high altitude took place over less than 3,000 years, a new genetic analysis shows, in what was the fastest shift in human evolution yet discovered.