in high ching, in china, in the winter of 1975, a large number of snakes came slithering out of their burrows. when they should have been hibernate. assume froze to death. the conspicuous behavior caused the scientist to urge that the entire city be evacuated. not long afterwards. a severe earthquake struck is an interesting story, certainly, but a story isn't the same as scientific proof. so researchers have until now remained skeptical to blame, possession of the problem with naturally occurring events like this is that everyone thinks afterwards that something must have happened before hand. so the news, but we simply have to nail down with hard data, whether that's really the case. that means we have to measure what an animal is doing before and during and after the event. that's what because the wants to try here with snakes with the help of cutting edge technology. using miniature computer is known as bio loggers, scientists canal tag animals permanently. and measure interesting data like their migration routes, park rates and the temperature in their environment. they can also