What is it about a slug's body that allows it to live in a variety of environments but makes salt a deadly substance? Take a closer look at these nocturnal critters with a 15-year-old from Maryland.

Did you that that only about 1 percent of cockroach species are household pests? Or that cockroach blood is usually green? This 17-year-old from Oregon examines these fascinating creatures.

Jellyfish have existed for more than 650 million years—longer than the earliest dinosaurs. Dive in with this Maryland teen for a look at an animal that ranges in size from 1.5 inches to 200 feet wide.

This 13-year-old from Ohio didn't have a great opinion of bees after one caused her to lose a ball game. That changed, though, when she realized how important bees are to the planet.

Siple's Antarctic trips are legendary. At 10, he was selected in a nationwide Boy Scout search to travel there. Several decades later, he was part of the first group to winter over at the South Pole.

After 200 years and the mining of 106 million tons of iron, the Cornwall iron mine was closed. Yet, as this 10th-grader from Pennsylvania argues, the site's geologic importance is far from over.

Millions of years ago, coral and algae thrived in the shallow sea that once covered Oklahoma's rocky, tree-covered hills and grassy plains. Explore the state's geologic past with this 10th-grader.

Getting lost "somewhere between North Dakota and Montana" during a family road trip led this 11th-grader from Wisconsin to a picturesque landscape, rich with geologic discoveries.

For three months in the early 1800s, earthquakes shook two pioneer towns in Missouri—and permanently changed the course of the Mississippi River. Relive that time with this 12th-grader from Wisconsin.

Talk about the force of gravity—Antarctica's powerful katabatic winds thunder down from the high polar plateau to the coast, creating wind speeds that typically exceed 100 mph every winter month.