#403 – Lisa Randall: Dark Matter, Theoretical Physics, and Extinction Events

1816.25 - 1839.761 Lisa Randall

I do think that we might be in the middle of an extinction right now, if you define it by the number of species that are getting killed off. And it's subtle, but it's a complex system. The way things respond to events is sometimes things evolve. Sometimes animals just move to another place. And the way we've developed the earth, it's very hard for species just to move somewhere else.