Doug Peltz, popularly known as Mystery Doug, is an American science communicator and entrepreneur based in San Francisco. He is best known as the host of the weekly science show Mystery Doug (2017 - today), now being watched by 1 out of every 5 children in the U.S., and the co-founder and voice behind the popular science curriculum Mystery Science. He was the first to discover that the Mediterranean red bug was now present in North America. He has been featured by Forbes, Wall Street Journal, NBC News, OC Register, TechCrunch, Business Insider, and other news outlets for his unique way of explaining science. As one of the most prominent science explainers around the time of the Solar eclipse of August 21, 2017, his video explaining the phenomenon was viewed 30 million times, more than the videos by NASA, National Geographic, and Discovery.