A Moment of Science would like to clarify a small point of navigation: the difference between a mile on land and a nautical mile.
Ever wonder what it's like on other planets? On this Moment of Science, find out what it's like on Mercury.
During the current ice age glaciers have advanced and retreated over twenty times. We’re living during one of the warmer periods when the glaciers have retreated.
Surprisingly, snow makes good insulation. In physics, an insulator is a material that does not conduct heat very well, like an oven mitt.