November 24, 2009 • 45m
The Grand Canyon is nearly 300 miles long and over a mile deep. You could stack four Empire State buildings one on top of the othe...Read more
December 1, 2009 • 45m
Mt Vesuvius is the world's most dangerous volcano, and it threatens three million people. It was responsible for the most famous n...Read more
December 8, 2009 • 45m
The creation of the Earth is explored. Included: a study of the planet's oldest rocks and meteorites to see what they reveal about...Read more
December 15, 2009 • 45m
Africa's Sahara Desert is the size of the United States, making it the largest desert in the world. It's also the hottest place on...Read more
December 22, 2009 • 45m
The Sierra Nevada, North America's highest mountain range, contains one of the most awe-inspiring geological features on the plane...Read more
December 22, 2009 • 45m
From Alaska to New Mexico, the Rockies are one of the great mountain belts of the world--caused by tectonic forces of the Pacific ...Read more
January 12, 2010 • 45m
The single longest linear feature on Earth--the "Ring of Fire" circles almost the entire Pacific. It is a ring of active volcanoes...Read more
January 19, 2010 • 45m
It is the tallest and biggest mountain on earth, as far removed from sea level as it's possible to be--and yet its sedimentary lay...Read more
January 26, 2010 • 45m
A look at the geologic treasure trove of Death Valley; how one of the hottest places on Earth holds evidence for the coldest times...Read more
February 2, 2010 • 45m
A look at the creation of the Mount St. Helens volcano in Washington state; its history of violent eruptions and the evidence anot...Read more
February 9, 2010 • 45m
A look back 250 million years ago when a massive volcanic eruption, (in what is now Siberia), spewed lava one mile thick over an a...Read more
February 16, 2010 • 45m
A look at past Ice Age eras that Earth has experienced throughout its existence; how the slightest changes in the planet's orbit a...Read more
March 2, 2010 • 45m
In the deserts of Nevada, research analysts will examine sedimentary rocks, which have built up over many years, to reveal how ext...Read more