AirPano
Virtual journey around the world

National Science Foundation
Antartica videos and resources 

Beyond Penguins and Polar Bears
Learn about Antarctica's past

BBC Schools
Activities in science

Ducksters
All about science for kids

NASA
Learn about space

National Geographic
Science videos, games, animals

National Ocean Service
Learn about the ocean

Solar System Exploration
Learn about the planets in our solar system

Space Operations
Learning Center