What are squamata? Why is the term "cold-blooded" incorrect? And how does chemoreception work? Find out with this glossary—from "adaptation" to "vertebrate."

This 11th-grader discovered a dramatic drop in the water quality along Utah's Spanish Fork River. Follow along as she investigates the source of this decline.

With this 11th-grader from Iowa, investigate a former munitions and nuclear weaponry plant that was placed on the EPA's Superfund list in 1989 and test the water quality of neighboring creeks today.

Because professional observatories can rarely offer the large blocks of time needed to search for variable stars, this 12th-grader from Maine outlines a system for using amateur equipment.

For as long as she can remember, this 7th-grader from Hawaii has helped her family destroy Kahili ginger. But was she helping or hindering the native environment? See the results of her investigation.

Find out how this 10th-grader from Oregon was able to take the back-and-forth motion he observed in Jupiter's moons and use it to figure out their circular motions.

Meet a 12th-grader from Louisiana who's seeking an environmentally friendly solution to animal waste. His motivation? Ten family cats and the four smelly litter pans he's charged with cleaning!

Decades after the fictitious Martian visit in the War of the Worlds broadcast, Grovers Mill, New Jersey, is undergoing a very real reconstruction. Investigate its environmental impact with this 9th-grader.

How do the many trees and shrubs that live at the bottom of dry riverbeds survive flash floods? Investigate the answer with this 7th-grader from Arizona as he monitors a neighborhood wash.