Atsuhiro Muto/National Snow and Ice Data Center
Sastrugi stick out from the snow surface in this photo near Plateau Station in East Antarctica. Most of Antartica looks quite flat, despite the subtle domes, hills, and hollows.
To really get a handle on climate change, it's important to look at not only what's going on now, but also what's happened in the past: The way, way past, like 50 million years ago.
According to a study published this week in the Proceedings of the National Academy of Science, things were a lot different back then climate wise. Peter Douglas, post doctoral fellow at Caltech and one of the people behind the studies joins the show with more.