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.