What brings archeologists and astronomers alike to this ten-mile canyon in remote New Mexico?
The more astronomy changes, the more it stays the same. This series of images juxtaposes ancient and modern study of the celestial bodies.
Does the sun rise in the east? Not exactly.
How do scientists establish the age of artifacts, rocks, and settlements?
See how TV screens create images from many tiny colored dots of light.
Bring movie, TV, and cartoon images to life.
Make yourself giant or tiny with a snip of the scissors.
Ever notice how noisy people are?
Playing games is a great way to exercise your brain. Even a simple game like Tic-Tac-Toe can teach you about strategy.
Your brain is always looking for blank spaces and filling them in. Sometimes, your brain leaps to the wrong conclusion. Then you get a surprise!
This new version of an old game will bend your brain.
Sometimes there's more than one way of looking at something.
Test your memory���and learn how to improve it!
These tricky pictures shift and change as you look at them.
Explore the strangest of strange attractors, the Lorenz butterfly.
Find out how your eyes work and watch a real dissection of a cow's eye.