How climate change is flooding the Arctic Ocean with light
This week, two experts explain how melting ice in the far north is bringing more light to the Arctic Ocean and what this means for the species that live there. And we hear from a team of archaeologists on their new research in Tanzania's Olduvai Gorge that found evidence of just how adaptable early humans were to the changing environment. Every summer, the sea ice in the Arctic melts -– but it's melting more and more each year. This dramatic loss is because the Arctic is warming two to three tim...
