Scientists in Antarctica have dug out ice that can be from as far back as 1.2 million years. NPR's Ayesha Rascoe talks to researcher Carlo Barbante, about what he hopes to learn from the ice.
Neuwied/Faro. An international study reveals how early humans, as far back as 1.5 million years ago, deliberately selected specific stones for their tools in the Ethiopian Highlands. The findings, ...