Only on the "CBS This Morning" podcast, meteorologist and CBS News climate and weather contributor Jeff Berardelli talks with two climate scientists about the extreme heat that made July the hottest month ever on record. Tom Crowther, a professor at ETH Zurich, was the senior researcher on a recent study about how by 2050, the weather in most cities will be drastically different. He shares solutions to combat what he refers to as the "climate challenge." Then, Loughborough University's Tom Matthews discusses the effect that extreme heat has on the human body and warns why we shouldn't become overly dependent on air conditioning as global temperatures continue to climb.