From "cannibal" water beetles to blind cave eels, hundreds of newfound subterranean animals have revealed unexpected diversity in the dry Australian outback.

From awe-inspiring parks to "cruise ship hell"—see what 437 experts say are the best and worst of the world's most iconic travel destinations.

A steam-shrouded bison, a bikini-clad diver, a seven-year-old shepherd, and other wild wonders stalk our selection of winning pictures from the latest Banff Mountain Photography Competition.

Plastiki, a 60-foot-long (18.3-meter-long) catamaran made of more than 12,000 plastic bottles, will soon ply the Pacific Ocean to increase awareness of environmental problems.Video

See Bluestonehenge, the newly discovered site that archaeologists say was likely a key stop on the journey to the afterworld—and to Stonehenge itself—for many Stone Age Britons.

They won't alter your mind, but the new glowing mushrooms make even scientists sound a bit psychedelic. Said one fungi expert, "When you look down at the ground, it's like looking up at the sky."

See images of Ardi, the new human ancestor that could rewrite evolutionary theory. Updated.

To help save South Australia's rare black-footed wallaby, researchers are taking joeys from the wild and placing them in surrogate pouches, encouraging wild moms to trigger "backup" pregnancies. Video.

Move over, T. rex, there's something leaner. A newfound dinosaur is nearly identical to the king of the Cretaceous—but a hundred times lighter and 40 million years older.

Why does Hierakonpolis, ancient Egypt's earliest city, contain tombs for baboons, elephants, cows, dogs, and cats? Archaeologists are uncovering answers.

For the first time, a photographer has walked alongside Wyoming pronghorn on their annual treks, documenting the modern obstacles endangering the ancient migration.

Global warming is putting the pika, a hamster-like mammal, in peril. High in the Colorado mountains, a National Geographic researcher is trying to find out why its numbers are falling. Video.

On foot, photographer Joe Riis provides an intimate window on one of North America's longest annual migrations, which is increasingly threatened by fences and highways. Video.

Two expeditions—including one that sets sail next week—will visit the Pacific Ocean's garbage patch this summer to call attention to millions of tons of plastic pollution.

The July, 22, 2009, total solar eclipse, the longest-lasting of the 21st century, darkened the skies over some of Asia's most densely populated regions.