In this video, an environmental technologist visits an abandoned coal mine in Kentucky to talk about how a remediation system (a series of settling ponds and treatment cells) is neutralizing the acid drainage flowing from the mine and keeping it from damaging a creek downstream.

This video from First Alaskans Institute spotlights the Alaska Native community of St. Paul and its hands-on commitment to care for the land and animals on which it depends.

This video segment from IdahoPTV's D4K points out what it means to be cold-blooded. A frog's life cycle is revealed as well as why it croaks, why it hibernates, and how it catches its prey.

It takes a thick skin to withstand the hardships that life has to offer. This collection of images shows a variety of animals, each with a slightly different type of protective covering.

How long does a baby elephant stay with her mother? What do you call a baby goat? Young children learn some interesting facts about the lives of baby animals in this original video from KET.

This collection of images of six different creatures, including insects and carnivorous vertebrates, illustrates the wide range of mouth types that exist within the animal kingdom. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

In this interactive game adapted from the Bigelow Laboratory for Ocean Sciences, build a food web that illustrates the flow of energy in an Antarctic ecosystem and the relationships between predators and prey.

This video provides a real-life example of the scientific method: testing hypotheses about which plants will grow most successfully on a green roof in Kentucky.

In this brief video, a biologist talks about the macroinvertebrates (typically aquatic insects) that form the basis of food webs in healthy Kentucky streams.

This video segment from Wild Europe: "Wild Arctic" explores the struggle for survival in one of Earth's most extreme environments.

In this feature, adapted from Interactive NOVA: "Earth," students explore the relationship between oxygen concentration and the well-being of various organisms by simulating a change in oxygen levels and observing what happens.

This video from WPSU’s series Outside suggests how to feed birds in winter, a hobby that can foster awareness, care, and respect for birds.

In this video from the WPSU’s series Outside, learn about backyard turtle habitats, their favorite foods, and why they don’t make good pets.

Squirrels and chipmunks are just two of the animals you might see. Backyard Wildlife, an original KET video, encourages children to explore the world outside their back door.

Squirrels and chipmunks are just two of the animals you might see. Backyard Wildlife, an original KET video, encourages children to explore the world outside their back door.

Students learn about the importance of the honey bee and other animals to the production of foods that are closely linked to human survival.

This Nature video segment explores how the relationship between humans and grizzly bears has changed over the course of American History, and it describes the closing of the Yellowstone National Park garbage dumps in the 1970s.

Learn about the precautions humans must take in the face of a growing grizzly bear population in this video from Nature.

This video segment explores the world of the beaver, including the biology of the species and, more importantly, its ability to transform an ecosystem for its own benefit.