In this video segment adapted from NOVA, learn about the critical role of flowers in seed plant reproductive biology.

In this video segment from NatureScene, discover some reptiles in the swamp forest ecosystem at Congaree Swamp National Park.

This video segment from Kentucky Life describes how scientists control pollination of one of the few remaining American chestnut trees to develop blight resistant trees.

In this video segment from NOVA scienceNOW, meet researchers who are studying obesity and trying to understand the role that hormones and genetics can play in regulating appetite.

Learn about root systems of trees in the Congaree Swamp National Park in this video segment from NatureScene.

This video segment from the Nevada Department of Wildlife looks at tarantulas' survival skills and their habitat.

In this video segment from Cyberchase, learn about the importance of creating a model as the CyberSquad designs a giant Trojan Ducky that will help them enter a fort without being noticed.

This video from Kentucky's Last Great Places shows how the Green River has remained unusually clean and why it is home to several endangered aquatic species.

In this video segment from Louisville Life, high school students in Louisville, Kentucky describe the benefits of creating rain gardens as a solution to non-point source water pollution.

In this video from the Science and Technology Chat series, learn about astrobiology, an interdisciplinary field that uses biology, astronomy, and geology to study the origins of life on Earth and to search for possible life on other planets.

In this video segment from Planet H20: Water World, experts and teens inside and outside the Great Lakes watershed provide different perspectives on sharing the water from one of the largest bodies of fresh water in the world.

In this What's Up in the Environment? video segment, learn how various indicator species are used to monitor the environmental condition of the Everglades.