James Powell: How We Know Global Warning Is True

James L. Powell, author of The Inquisition of Climate Science, prepared a video of showing how scientists know that global warming is true. The video demonstrates and explains the evidence. Powell also offers a series of slides that explains the sources for his evidence.

In The Inquisition of Climate Science takes on the climate science denial movement and the deniers themselves, exposing their lack of credentials, their extensive industry funding, and their failure to provide any alternative theory to explain the observed evidence of warming.