This morning at 4am EST on the International Space Station, an Ammonia leak alarm went off, leading the crew to perform an emergency evacuation from the American capsule of the ISS.  All of the astronauts are currently safe and secure in the Russian capsule of the ISS. The hatch between the two capsules has been sealed, and any non-essential equipment has been powered down. Mission Control is in the process of assessing whether the alarm was the result of an actual leak or a malfunction, though recent reports from NASA TV suggest that the alarm was due to computer glitch...