Science Tweets! Andy Weir (Mars Edition)
Andy Weir, author of The Martian and Artemis, reads the internet's tweets about his books, Mars, and the outer limits of the universe-and responds with science facts and science fiction to all of them. Also, thoughts on being a #spacedork. Weir is a "big thinker" for season 2 of National Geographic's Mars series, which premieres Monday, November 12 at 9PM ET.