When Aliens Attack

What if an extra-terrestrial force attacked Earth? What might that look like and how will the people of Earth respond? Consulting a cast of world-renowned scientists, survival experts and defense experts, National Geographic explores this frightening scenario. Experts reveal what could motivate alien invaders to attack Earth, and speculate on how the attack might play out, the strategy alien invaders might use, and the most effective ways for humans to respond.

• Savas GeorgalisWriter
• Louis C. TarantinoDirector
• Jesse EvansWriter

• James LurieNarrator (voice)
• Seth ShostakSelf - SETI Institute
• Nick PopeSelf - U.K. Ministry of Defense
• Brian De ToySelf - Director of Defense Studies, West Point
• Stephen HawkingSelf - Theoretical Physicist (archive footage)
• Paul SpringerSelf - USAF Air Command and Staff College
• Travis TaylorSelf - Physicist & Author
• Bob BoanSelf - Co-Author, Alien Invasion: How to Defend Earth
• Michael MichaudSelf - Author, Contact with Alien Civilizations
• Paul ParsonsSelf
• John RingoSelf - Author, Live Free or Die
• Mark MoffettSelf - Author: Adventures Among Ants