Mar 15, 2020
Michael Mann drew a chart back in 1999 . It's
called "The Hockey Stick Graph" because of the way it shoots
up. There was no new information in it and it drew on agreed
international temperature data.
Like Charles Darwin, Dr Mann dared to publish. His "hockey stick" still makes him a target for fossil fuel lobbyists. So what happens when a scientist is taken on by powerful interests ? Dr Karl asks him about the experience.