It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

What is the water cycle? We're glad you asked! Learn about this amazing natural system that's been working for billions of years.

Discover how water flows in this informative environmental science worksheet!