Archaeologists have uncovered a continuous record of some of the earliest human populations in Africa.
Decades of extreme weather first weakened the Mayan culture and then killed off much of the population.
An archaeologist at the University of Alabama in Birmingham says she's discovered 17 lost pyramids in Egypt - without even leaving her desk.
Climate change is destroying important archaeological remains that have been frozen for thousands of years, a study has shown.
Analysis of a tiny fossil has indicated that a third type of hominin may have lived alongside early humans and Neanderthals in central Asia 40,000 years ago.