ANTARCTICA - U.S. scientists say they've pinpointed the coldest place on the planet.
This NASA graphic animation locates a high ridge in Antarctica in the East Antarctic Plateau where temperatures plummet to -133.6 degrees Fahrenheit.
The Russians documented low temperatures at a base called Vostok but U.S. scientists found colder temperatures just off the crest.
According to U.S. scientists, the crest is so high that the cold air radiates in space.
The frigid -133.6 degrees is 50 degrees colder than the record low in Alaska.
Ordinary mercury thermometers won't work in that environment.