The effluent lake in Fountain Hills makes for a spectacular fountain—one that can erupt up to 560 feet. But what quality of lake is created with the use of recycled wastewater?

One of the benefits of living in California, according to this 9th-grader, is inhabiting a environment that provides a critical link between humans and the Pacific Ocean.

This 10th-grader from New York first became fascinated with bats when she observed their "magical movements" in Israel's Negev Desert as a young child. Trek with her to Ontario to study their behavioral ecology.

Search a database with more than 8,300 reptile species. Learn about amphibian biology and conservation. Review the evolutionary history of squamates. And find hands-on science activities.

Explore the McLaughlin gold mine in Northern California. See the first metal coins, which were created in the Middle East around 600 BC. And investigate the properties of gold.

How much can you reduce your carbon dioxide emissions? Is it worth it? Learn how simple choices multiplied by everyone in your community can make a big difference.

Follow mermaids around the world and throughout history to see first-hand how cultures share and reinterpret mythic creatures.