Asteroid

James Hansen, top climate change scientist

"Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate change], yet we dither"

Interesting and very important talk by Mr Hansen, however not the best rhetorical skills. 6 minutes in it starts getting really interesting, the beginning is mostly about the difficulty to get people (government) to listen and another example of corruption. Haven't heard that before...