Humans may have exited out of Africa and arrived in Southeast Asia 20,000 years earlier than previously thought, a new study involving University of Queensland researchers suggests. Findings from the Macquarie University-led study also suggest humans could have potentially made the crossing to Australia even earlier than the accepted 60,000 to 65,000 years ago. Dr Gilbert Price of UQ School of Earth and Environmental Sciences said the dating of a cave site in West Sumatra, called Lida Ajer, provided first evidence for rainforest use of modern humans. "Rainforests aren't the easiest place to make a living, especially for a savannah-adapted...