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- Alaska's Wrangell-St. Elias is a wild, remote alpine landscape of incomprehensible grandeur, containing the highest coastal mountains in the world, peaks with greater vertical relief than the Himalayas, and the greatest concentration of glaciers outside the polar icecaps - a single national park larger than Switzerland.
- Scientists hunt for dark matter in the strangest of places. They know where it is, what it does and can sort of see it if they look in the right way. They just can't quite figure out what it is or how to get their hands on it even though it's everywhere. But it is well understood compared to dark energy which is an even bigger mystery.
- In space travel there is a saying that the first 50 miles and the last 50 miles are the most dangerous. Explore the controlled explosion of launch, the fiery crucible of reentry and everything in between. See how a single spark inside a spacecraft or a micrometeoroid less than an inch wide hitting a space station can turn a routine mission into a lethal nightmare.
- Could we be unique in the universe or is there another planet similar to earth somewhere in the cosmos? Is it possible that Alpha Centauri, our nearest star, is home to another earth-like planet? Earth sized planets have been hard to find, but indirect methods are coming on line to give scientists a good survey of how many such bodies may be in the universe.
- At this very moment, celestial forces prowl the Universe and threaten man's very existence. They're asteroids and comets--and they've left their imprint on planet Earth, literally. Initially, they helped build planets through violent collisions. During this fiery bombardment period, they may have even seeded Earth with water and the building blocks for life.
