Use Braille to create a message for a friend.
Explore your nerves by creating a life-sized drawing.
Try these trippy experiments to fool your brain.
Scientist Rob DeSalle answers kids' questions about the brain!
Test your sight and memory with these brain games.
Photos: Ed Mathez headshot, © AMNH/D. Finnin. Satellite image of United States, Earth globe, ice, coral reef, © NASA. Smog, © US EPA. Polar bears, © US Fish & Wildlife. Flooded house, storm, cracked land, © USGS. Crowd, © Flickr.com/kaim_a. Wind power, © Glowimages/AGE Fotostock. Lightbulb, © A. Booker. Electronics, © iStock. Bikes, © M. Tarr.
Find out about Earth's climate, its consequences, and what we can do.
Photos: AMNH / Matt Tarr
Build your own miniature greenhouse to see the greenhouse effect at work.
Find out what you can do to save energy and slow climate change!
Photos: storm photo: © CORBIS ,traffic: © Tony Tremblay, house with solar panels: © Taggart Construction
Think you're an expert on changing climate? Test your knowledge with this quiz!
Photos: smokestack, © Ken W. Kiser; polar bears, courtesy of US Department of the Interior; sky, © Vanessa Van Ryzin; ice, © USGS; traffic light, courtesy of istockphoto.com; traffic, © Tony Tremblay; buoy, © NOAA; scientists and ice core, © AMNH; flood, © USGS; Arctic ice cover, © NASA; coral reefs, © Ian Skipworh; periwinkle snail, © USGS; girl with bag, © AMNH; house with solar panels, © Taggart Construction.
Find out more about global warming. How, and why, we should slow it?