They do more than a million dollars of damage in the US a year. Many people can't wait for the snow on their streets to melt. But here's a scientist who's perfected a way to keep a pristine snow flake frozen for years. That extra oxygen helped keep the gargantuan flies breathing. Here's a new technique to measure the thickness of the ice by listening to it.
Teeth record a history of what an animal eats and drinks.
And since water composition varies according to the weather, an animals' teeth can actually be used to track the climate. The Sahara conjures up images of a vast, scorching wasteland. But it wasn't always that way. The space shuttle is now examining the Sahara for vestiges of ancient river beds. Here's a description what life is like at the North Pole.