MADIDI:
Bolivia's spectacular New National Park.

BUGGING OUT:
Join Joel Sartore in Madidi as he waits for killer swine, digs burrowing maggots from his flesh, and sleeps with bats and sweat bees.

ARCTIC SUBMARINE:
Beneath the icy surface of the Arctic Ocean, scientists aboard a Navy submarine map uncharted waters and gather clues about Earth's changing climate.

ANCIENT GREECE III:
After Alexander the Great's 12-year campaign of slaughter and conquest his Greek language and culture linked kingdoms from Egypt to the Indus Valley for 3 centuries.

HARD ROCK LEGACY:
Gold, silver, and other hard-rock mining contributed a colorful page to the history of the American West.

BEIJING:
Beijing's booming economy is transforming the city-scape of China's ancient capital as well as the lifestyle and expectations of its inhabitants.