One key way dogs differ from wolves, scientists have discovered, is in their ability to digest starchy foods, indicating that the split between the two species may have come about as dogs adapted to scavenging human leftovers.
It's long been suspected that having a big brain isn't necessarily an evolutionary advantage. Now, scientists have come up with experimental evidence for this view, by breeding a strain of big-brained guppies.
European Neanderthals were on the verge of extinction even before moderns humans arrived on the scene, a DNA analysis has shown.
Genes from non-human hominids are more common in present-day humans than thought, a new genetic analysis shows.