We owe our lives to gravity. It holds the atmosphere to Earth and keeps us all from falling off into space. Not to mention that without gravity, the stars and planets—including Earth—wouldn't even exist!
Did you know that satellites and the Space Shuttle don't need engines to power their orbits? See how Earth's gravitational pull bends their forward motion and keeps them moving around the planet.
Antarctica's winter runs from mid-February through late August. If you decide to stay, you're there for the duration—all aircraft traffic is stopped. Learn how research crews prepare to go it alone.
At the poles, it's possible to study sea ice that's 3,000 years old. Find out what scientists learn by cutting up ice cores and seeing the ice crystals' many different textures and colors.
Why does cold air rush out of a freezer when you open the door? How does it then move through a room? Experiment to learn the answers—and gain insight into the blustery winds of Antarctica.
This slideshow provides background information on the bighorn sheep and their habitat and breeding habits.
It all comes down to choosing the right outfit ... when you're dressing for an expedition to Antarctica. Do you know which fabrics would do the best job keeping you warm and dry?
Hazards to Humans, Polar Gear, The Cold Facts—how well do you know your Antarctica trivia? Whatever you do, don't forget to give your answers in question form!
Ice floes, katabatic winds, and subzero temperatures—welcome to life in Antarctica. What features would your ideal creature have to thrive in this extreme habitat?
There's a good reason why your summer attire is lighter and brighter than your winter wardrobe. This easy experiment illustrates the power of albedo in black and white.