Juan Luis Arsuaga

At least two hominin species - Homoerectus and Paranthropus boisei- coexisted in Kenya's Turkana Basin around 1.5 million years ago, a study published in Science confirms. The authors describe the first physical evidence of this coexistence in the form of footprints, found at several sites in the area.

The Karolinska Institute has awarded the Nobel Prize in Medicine or Physiology to Swedish biologist Svante Pääbo, a specialist in evolutionary genetics, for his discoveries on the genomes of extinct hominids and human evolution.