Join National Geographic on a 2002 assignment to explore Fidel Castro's Cuba, which has been closed to U.S. visitors for decades.

If you think you know the meaning of "night life," then you haven't gone scuba diving off the Florida Keys after dark. Join divers as they take in the evening show that is the ocean at night.

With their fields of green and grapes, wineries might not seem environmentally unfriendly. But these lush vineyards are coming under increasing fire.

The European Alps could be virtually ice free by the end of this century, a new study warns, as rising air temperatures melt away mountain glaciers.

Explore the deep, dark secret below Great Basin National Park, a little-known network of caverns known as Lehman Caves.

Watch forestry experts tempt wind, flames, and fate by lighting a controlled burn to protect one of the U.S.'s great northern forests.

It's the resting place of countless Stone Age dead, but mystery lives on at Newgrange, a tomb with one feature that seems straight out of Raiders of the Lost Ark.

Take a video tour of one of the United States' oldest neighborhoods, from the landmarks of the Freedom Trail to the bistros of its restaurant row.

The Tuamotu islands near Tahiti seem like a priceless paradise. But experts warn the archipelago may soon vanish under the sea due to global warming.

See the Northwestern Hawaiian Islands, the eye-opening Eden that President George W. Bush has designated a U.S. national monument.

President Bush has designated the Northwestern Hawaiian Islands a U.S. national monument, creating the largest marine reserve in the world.

Related video: See the islands and their wildlife.

Take a spin down Utah's Colorado River Scenic Byways, from the desert oasis of Zion National Park to the red-rock towers of Bryce Canyon.

See the Grand Canyon as only the bravest visitors do—from the white-water rapids of the Colorado River.

The award-winning documentary is the first commercially released film shot by soldiers in the field and the first to be directed via email and instant messenger.

Explore Roosevelt National Park, and see how time has shaped the majestic landscapes the former U.S. president first roamed in 1883.