Research Fellow David Legates, co-author of Hot Talk, Cold Science: Global Warming’s Unfinished Debate (Revised and Expanded Third Edition) talks about co-author Fred Singer's legacy and the research that went in to the updated book on the impacts of climate change. The climate always has changed and always will change, says Legates. People can adapt to the climate warming, no matter the cause, he says. Legates talks about a number of climate science topics saying that science is never “settled.”