Astronauts spend years training for missions. How do commercial travelers get ready?

Soyeon Yi, the first Korean astronaut, details her experiences with Americans and Russians while on a mission on the International Space Station.

Harvard University researchers, in collaboration with the U.S. Army Combat Capabilities Development Command Soldier Center and West Point, have developed a lightweight, multifunctional nanofiber material that can protect wearers from both extreme temperatures and ballistic threats.