November 11, 2007 • 1h
How does a mountain shape the perfect surfing wave? What creates a paradise — yet also destroys it? And how could an island wipe o...Read more
November 18, 2007 • 1h
What makes Alaska the last great wilderness on earth? Why is it the best place to see the northern lights, and why are the mountai...Read more
November 25, 2007 • 1h
Where would you find the biggest dinosaur ever? The oldest glass in the world? A cave so precious it changed history? In the same ...Read more
December 2, 2007 • 1h
What forces created Earth? What do the Grand Canyon, the world's tallest waterfall and the Sahara have in common? What is a hot sp...Read more
December 9, 2007 • 1h
How can the biggest living thing on the planet survive almost anything? How did it get to be so big? And who really is the biggest...Read more
December 16, 2007 • 1h
How did the Grand Canyon get so deep? What are the secrets revealed in its mile-high walls, and what makes a world-class white-wat...Read more