Don Ahrens is professor emeritus at Modesto Junior College in Modesto, California. He has influenced countless professionals in the field of atmospheric science, as well as hundreds of thousands of students who use his books to better understand weather and climate. In 2007, the National Weather Association awarded him a lifetime achievement award for these accomplishments. The bestselling author of two Cengage texts, Professor Ahrens received the Textbook and Academic Authors Association's McGuffey Longevity Award for the Ninth Edition of his market-leading METEOROLOGY TODAY.


Robert Henson is among the nation s most widely read writers on weather and climate. He is a regular contributor to the Yale Climate Connections website and a contributing editor at the Texas Climate News website and Weatherwise magazine. Prior to his freelance career, Henson was a staff writer and editor at Weather Underground and at the University Corporation for Atmospheric Research, which manages the National Center for Atmospheric Research. An expert on tornadoes, thunderstorms and hurricanes, Henson has also analyzed how TV weathercasters cover major storms and report on climate change. His books include THE THINKING PERSON'S GUIDE TO CLIMATE CHANGE, whose original edition was shortlisted for the UK Royal Society Prize for Science Books.