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Primary
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Back From the Brink: Lessons Learned From Saving the Ozone Layer [Pdf]

For Students 9th - 10th
Good site for material on the people involved in inventing CFCs and those who discovered its effects on the ozone layer.
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Article
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Nrdc: Composting Is Way Easier Than You Think

For Students Pre-K - 1st
The NRDC breaks down how to easily achieve at-home composting. Find out what can and cannot be composted.
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Website
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Nrdc: Clean Water and Oceans

For Students 9th - 10th
What prompted congress to pass the Clean Water Act? Has this legislation been successful? The Natural Resources Defense Council offers information on fresh and ocean waters, pollution control, conservation, and more.