Climate Scientist Michael Mann, author of The Hockey Stick and the Climate Wars, gave a talk at Trinity College a couple of days ago on climate change and ethics. Just so you know, the Hockey Stick is a graph Mann and colleagues produced during the late 20th century showing how rapid recent global warming stands in stark contrast to previous centuries of climate change. The research itself has been repeatedly reconfirmed, refined, replicated, and verified, so it is for real. See, for example, this post by Stefan Rahmstorf.
Anyway, here’s the interview: