Call them twisters or tornadoes. They are nature's most violent storms with swirling winds that can top 300 miles per hour. About 800 twisters sweep through the US every year, more than anywhere else in the world. The hardest-hit area is a swath of t...
On Monday, an earthquake in China measuring 7.9 on the Richter scale occurred along a fault where south Asia pushes against the Eurasian Landmass, smashing the Sichuan Plain into mountains, leading to the Tibetan highlands. In 1989, the Loma Prieta E...
April 18, 1906, California's San Andreas Fault snaps, shaking San Francisco for nearly 60 terrifying seconds .When the trembling stops, the disaster is only beginning. Gas lines rupture, setting off massive fires, some 700 people die. Most of the cit...
We are here in Yellowstone National Park to follow some grey wolves and observe the deadly brilliance of the pack. Theyve learned to cooperate, hunting their prey with many acting as one pack. This mother grizzly knows how to protect its cub and itse...
It's been protected from human impact since 1909. With three million acres, nearly a half million under water, Superior National Forest is largely unspoiled. But now the survival of this national treasure rest with those who would see some of it burn...
The waves of these azure seas hide an abundant treasure. Below the waves, coral reefs provide a habitat for teeming life, a life with a kaleidoscope of color. In oceans around the world, clear and well-circulating waters encourage corals to anchor an...
Here are some happy vampire bats. What's causing all this giddiness? A great, big, fat meal has arrived. You can practically hear these bats going Oh, boy! Oh, boy! Better yet, the victim is asleep. This is gonna be like, well, taking blood from a sl...
Like a phoenix rising from the ashes, astronomers have found a whole new solar system may be forming in the wake of a star's violent death. This is the Hidden Universe of the Spitzer Space Telescope, exploring the mysteries of infrared astronomy with...
Dale Aden has been farming most of his life, just like his father, and his fathers father. I am a third generation farmer on this land. His land is in Okabena, Minnesota, right along the Okabena creek, where for many years, Aden watched helplessly as...
It is called the Roof of Africa. Rising 19,340 feet nearly 4 miles into the sky, Mount Kilimanjaro is the highest point on the entire African continent. Located in northeastern Tanzania in east Africa, Mount Kilimanjaro is about equal distant from Ca...