The most interesting science news of 2013

I went on Minnesota Public Radio's The Daily Circuit last week to talk about some of the most interesting science stories of the year. We had an hour. Naturally, we barely scratched the surface. (You'd be amazed how quickly an hour goes by on the radio.) We hit some cool stuff in space, questions about climate change, the politics of science, and more. What were your favorite stories of 2013? What do you think we missed?