Climate scientist Michael E. Mann, explains why the IPCC’s new report on climate change is more conclusive evidence on the climate crisis, why we should think of acting on climate change as planet insurance, why the IPCC reports set the scientific standard, how fossil fuel interests distort scien...

Climatologist and director of Earth System Science Center Dr. Michael Mann on Conservative smear campaign to discredit climate scientists, distract the public and the dire consequences.  Also, science as contact sport and his book, The Hockey Stick and the Climate Wars.  In the better half, net i...