More than three million visitors step onto this charged volcanic landscape every year. Yet the geologists that monitor it are unconcerned about a large, imminent eruption. Find out why.

Unlike people in Africa, who kept their distance from elephants except to hunt them, people in Asia have lived closely with elephants since at least 2000 B.C. Take a closer look at the underlying bond that exists today. 

The magma chamber responsible for Yellowstone's volcanic activity is buried 8km beneath the surface. Find out how researchers monitor its geologic moves.

The Asian elephant once roamed from the Tigris and Euphrates rivers in western Asia as far east as China's Yangtze River. Take a closer look at this now highly endangered species. 

Meet Professor Robert B. Smith, who has spent nearly his entire 40-year scientific career studying the volcanic setting of Yellowstone National Park and geologic evolution of the Teton Range.

In April 1609, English explorer Henry Hudson set sail in his ship the Half Moon in search of a Northwest Passage to the Pacific Ocean. While he didn't find it, he did navigate the Bronx River. See how it's changed in the centuries since Hudson's voyage.

Sprawl is affecting Homo sapiens as it does many other species: it alters our habitat, hampers our mobility, and diminishes odds for survival.

See how scientists are using radio telemetry to gain a clearer picture of how much and what kind of space wood turtles need to survive.

Seeds can't move by themselves, so they rely on moving things to give them a lift. Discover how cars are taking homespun seed dispersal mechanisms to a new level.

What's the animal-friendly antidote to California's urbanization? Some believe the solution is to make the corridors between disparate patches of wild lands truly useable by many different species.