Simple Bacteria Offer Clues to the Origins of Photosynthesis
Studies of the energy-harvesting proteins in primitive cells suggest that key features of photosynthesis might have evolved a billion years earlier than scientists thought.
Nobel Prize Awarded for Biological Clock Discoveries
Three U.S. biologists share the Nobel Prize in Medicine for their research into the molecular mechanism that drives circadian rhythm.
Genetics Spills Secrets From Neanderthals’ Lost History
How many Neanderthals were there? Archaeology and genetics have given very different answers. A new study reconciles them and reveals the lost history of these ancient people — including an early brush with extinction.
Interspecies Hybrids Play a Vital Role in Evolution
Hybrids, once treated as biological misfits, play a vital role in the evolution of many animal species. Now conservationists are trying to reconcile that truth with policies.