Take a nature walk through the fields and wooded areas in the back-hill farm country of New York State with this 15-year-old. But watch out for wild dogs!

Bacteria—the oldest, simplest, and most numerous forms of life—can reproduce as often as every 20 minutes. Learn more about their significant role in ecosystems from this 13-year-old from Ohio.

How did tropical fish end up in Montana's Trudau Lake? And do they go dormant to survive the winter? This eighth-grader's winning essay investigates and answers these questions and more.

With most of its rocks buried and completely unknown, Antarctica is the last continental frontier. Go with Finn under the ice to find out how Australia and Antarctica once fit together.

Working in the extreme environment of Antarctica calls for supreme gear and machines—that is, unless you're naturally outfitted, like an emperor penguin or elephant seal.

From leaf margin and arrangement to the parts of a flower and a corn seedling, take an illustrated look at plant morphology with this collection of guides.

If the West Antarctic Ice Sheet breaks apart, it could release enough water to raise the sea level by six meters (19.7 feet). Meet a scientist studying the ice sheet's past in order to predict its future.

Journey to the Sonoran Desert in southern Arizona with this seventh-grader for an up-close and personal look at the saguaro cactus, which can live about 200 years and grow to be almost 80 feet tall.