Want to save the planet? Start by saving water!

The Earth is alive! Learn how the Earth's biosphere—its organisms, soil, water, and atmosphere—all work together.

How can air be bad for you? Find out with this website.

How do you know when it's safe to play outside? Use the color-coded Air Quality Index to help you learn more about air quality. 

What's the difference between an asteroid, a meteor, and a comet? NASA fills you in.

Do you wish someone could explain the difference between a balanced and unbalanced force? Then watch this four-minute video by two middle school science teachers—with help from their students.

How did cell theory develop? Learn about microscopes and the development of cell theory.

 Learn about the parts of the cell, cellular division, and basic cell function. 

Do you ever wonder about the different clouds in the sky and what they can tell you? Then watch this five-minute video by the National Weather Service.

What are the stages of coal formation? Find out here!

How do living things interact with their environment? Learn more in this 14-minute video that focuses on the ecosystem in Yellowstone National Park.

How do you diagnose a sick stream? Find out in this eight-minute video from the Smithsonian.

Learn more about endangered species and explore ways you can help stop the spread of extinction! 

It takes a lot of energy to support life on Earth. Where does it all come from?

Active energy vs. stored energy. What's the difference? Find out with this website.

Water and soil, water and leaves, water and plants...which filters water best? Test all three in this short video.

There are four horizons (layers) of soil: O, A, B, and C. Learn about them all here.

Find helpful tips for eating healthy to meet the needs of a growing body.

 Learn about the parts of the cell, cellular division, and basic cell function!

Celebrate light with the IYL2015. Videos, articles, science projects, and more!