Turbulent era sparked leap in human behavior, adaptability 320,000 years ago Phys.orgSurprising leap in ancient human technology tied to environmental upheaval National GeographicTurbulent environment set the stage for leaps in human evolution and technology 320,000 years ago The Conversation USTo Adapt to a Changing Environment 400000 Years Ago, Early Humans Developed New Tools and Behaviors Smithsonian MagazineHow ancient humans responded to climate change reveals a "hallmark" of our species InverseView Full Coverage on Google News