Summary: <p>The United Nations Environment Program says the news about climate change is "bad and getting worse." In the U.S. alone, thousands of heat records have been matched or set so far this year. Most climate scientists have long accepted that the planet is warming and human activity is partly to blame. But global warming deniers have had a strong voice in the debate - along with substantial research dollars from conservatives such as the Koch brothers. Diane will talk with a prominent skeptic who has changed his mind. And her guests will explore not just the dire predictions, but also possible solutions.</p>
