Climate scientists are preparing for new attacks from Republicans. But they don’t all agree on the right approach.
In 1998, Michael Mann published a graph that showed the Earth was getting warmer. Now he’s being investigated for fraud. Alison Stewart talks to Mann to get his side of the story.
An influential climate scientist who has been accused by the Virginia attorney general of defrauding the public calls the probe “criminal harassment” and warns that the case could set a “horrifying” precedent.