Travel through time and check out what the Earth looked liked in the far distant past or what it might look like far into the fu

USGS site for kids

Field Guides : Search more than 5,500 species

Famous Scientists

Amazing predictions for the next millennium

Learn about our solar system, take a star tour, see how gravity and inertia work, play a fun lunar lander game, and more at this

Features virtual field trips, virtual experiments and other interactive activities supplied by science centers around the world