His CIA code name is Condor. In the next seventy-two hours almost everyone he trusts will try to kill him.

The moment a creature dies, its DNA begins to break down. Half of it degrades every 521 years on average. By about 6.8 million years, even under ideal preservation conditions in cold, stable ...

But DNA breaks down fast in the places our distant ancestors roamed. As a result, many of the key adaptations that make us uniquely human date to a period in which ancient DNA is indecipherable. But a ...