Dated to more than 300,000 years ago, the finds raise key questions about the defining features of Homo sapiens and how our kind came to be -- Read more on ScientificAmerican.com
Creatures living among the hydrothermal vents burbling under the Arctic Ocean's ice layer have been historically difficult to study, but an underwater vehicle, the Nereid Under Ice, can get close to... -- Read more on ScientificAmerican.com