In 1983, the first consumer mobile phones launched and "Star Wars" meant Return of the Jedi. That year, scientists from Japan's National Institute of Polar Research collected microscopic animals called "tardigrades" from Antarctic tundra. They then placed them in a freezer, where they spent the next 30 years. In 2014, researchers decided to defrost the samples to see if the tiny creatures, also called "moss piglets," would come back to life. When the thawing process completed, two creatures started wriggling immediately, setting a new deep-freeze duration record for tartigrades.