Take a video tour of the commercial superjumbo jet that can seat 555 and has room for a bar, a store, and someday even a gym.

Tarzan, eat your heart out. Zip lines and walkways crisscrossing Costa Rican jungles are offering monkey's-eye views of these vibrant habitats.

This week: jumbo squid vs. giant whale, robot ethics, Richard Leakey on rare gorilla birth, discovery of longest underground river, and more.

The treasure hunters are only the latest to search for a cache of gold said to have been buried near Florida's Suwannee River by 19th century pirate Jean LaFitte.

What Wile E. Coyote would have given for one of these: a 400-story-high walkway that will break your fall for $25.

Find out why—even though it smells like a garbage dump—the durian fruit is considered a rare treat in Malaysian Borneo.

Polar explorer Will Steger will lead a team across Canada's Baffin Island to document the ways global warming is impacting humans in the far north.

Daredevil jumpers might soon have a new rush to add to their repertoire: diving from great heights and making a safe landing without a parachute.

Join a team of kayakers as they search for shallow salt lakes—the last remnants of oceans that once covered an arid mountain plateau.

Huge armadas of toxic bluebottle jellyfish are swamping Australia's east coast in record numbers, likely because of warming ocean waters.

Jittery fliers can take heart. NASA is developing two new technologies to help pilots steer clear of erratic, gusty winds.

The princes of "Sealand" are selling the North Sea platform they call a country. Among the suitors: a Web site eager to extend the principality's pirate tradition.

Many ski areas, driven by a desire to be more environmentally friendly, are now buying cleaner energy—or making their own.

Even in apartment blocks, volunteer shooters take aim to rid the ultra-orderly metropolis of a disorderly invasive species.

Miners and tourists alike are contaminating Argentina's caves, say scientists, who warn that fragile underground ecosystems and archaeological sites are at risk.