Are DNA samples today's version of the human skeletons that hung in 20th-century natural history museums? They can provide genetic revelations about our species' history – but at an ethical price.
New discoveries are changing archaeologists' ideas about the origins of our own species and our migration out of Africa. This fossil pushes Homo sapiens' African exodus date back by 50,000 years.
How a research team identified parasites in 'hygiene sticks' that travellers on the Silk Road effectively used as their toilet paper.