HIGHLY INFECTIOUS ALIEN DISEASE | Countdown to Armageddon

Researchers believe that many of the deadliest diseases come from outer space. See more in this clip from Mega Disasters. #MegaDisasters Subscribe for more from Mega Disasters and other great The HISTORY Channel shows: Check out exclusive The HISTORY Channel content: History Newsletter: Website - Facebook - Twitter - The HISTORY® Channel, a division of A E Networks, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research C