Yellowstone National Park is a spectacular landscape and a diverse habitat which supports an array of wildlife. But this serene habitat also holds a dark secret: it sits atop a super-volcano that could 'blow' at any minute. This episode follows the park's residents; the beavers, otters, elks and bison that are oblivious to this ticking time bomb, thriving in this land of extremes. Our narrator, esteemed naturalist Armstrong Wedgewood (actor Matt Lucas)...

Plant and animal life is unique to each area in the world because of the diversity among land regions. In this program viewers will learn about and come to value what each part of our world has to offer. Through studying the various habitats found on earth, students will develop an understanding and appreciation for the diversity that surrounds us. By doing this we can begin to teach people how to prevent further endangerment, or even extinction,...

Polar bears struggle for survival on the melting Arctic ice and move inland toward humankind. This ABC News film investigates the effects of polar bears descending on an Alaskan village and the race to save a vulnerable species.

In this episode, Chris Packham uncovers nature's super-survivors: a frog whose dinner is fighting back, a shark with the secret to long life and a prehistoric fish with a thirst for blood that almost destroyed an entire fishing industry. A foray into freak weather reveals why a monster wave shocked swimmers in Sydney and how two fisherman were engulfed by a fog tsunami on Lake Michigan. The senses also come under scrutiny as Chris investigates whether...

The Florida Everglades, an extremely diverse ecosystem that hosts a wide variety of flora and fauna, began to form about 5000 years ago when sea levels stabilized after the last ice age. Mangrove coastlines, hardwood forests, and cypress swamps began to flourish. Water covered the lower half of the state of Florida, and slowly drained into estuaries, supporting a dynamic salt water system. But as populations increased in Florida and the demand for...

Learn about grasslands across the globe and what animals can survive there.

How is sustainability defined for a society and its environment? This unit includes on-location demonstrations of best-practice eco-sustainable activities.

While ecosystems face increasing pressure from human activity, science plays a critical role in controlling and minimizing harmful effects. This clip explores the role of science and technology in identifying impacts on ecosystems and finding solutions for a more sustainable future. It provides students of biology and other sciences with an excellent overview of this important area of study.

The research team of Dr. Mark Hay, from Georgia Institute of Technology in Atlanta, has found that the herbivorous fish that eat algae from coral reefs are crucial for the conservation of these major barriers.

Grasslands cover one quarter of all land and support the vast gatherings of wildlife, but to survive here animals must endure the most hostile seasonal changes on the planet. From Asia's bizarre-looking saiga antelope to the giant anteaters of Brazil, grassland animals have adapted in extraordinary ways to cope with these extremes. In the flooded Okavango, lions take on formidable buffalo in epic battles, on the savannah bee-eaters take advantage...