Australia's worst dust storm in 70 years blanketed east coast cities in outback grit and cast an orange glow over Sydney at dawn Wednesday morning. Video.

Flying for years under the scientific radar, the new ghostshark species is among the world's oldest and—and oddest—fish.

For the first time, a giant squid has been caught alive—though not for long—in the Gulf of Mexico, U.S. officials say.

On the 143rd anniversary of H.G. Wells's birth, several of the writer's inventions—such as moving walkways and sliding doors—have become reality while others, like the time machine, remain science fiction.

UPDATE: A gelatinous fish found off Brazil's Bahia coast has been touted as a previously unknown species. But the six-foot-long, toothed oddity may be a known member of a group of mysterious bottom-dwellers known as jellynose fish, another expert says. Video.

Gilded masks, llama bones, and ceramic bowls are among the treasures found in a tomb that may have belonged to an elite male of the pre-Inca Moche culture of Peru, archaeologists announced.

Want a gorgeous garden? Just add pee, according to a new study that says nitrogen-rich urine and magnesium-rich ash work together to form a powerful—and cheap—fertilizer.

The official world's tallest man is an eight-foot-one-inch (246-centimeter) 27-year-old from Turkey, Guinness World Records announced today. A pituitary tumor had caused his gigantism. Video

Decipher symbols of the Freemasons—the secret brotherhood featured in novelist Dan Brown's new book, The Lost Symbol.

Authorities are using a robotic submarine to investigate whether the Mafia dumped "hundreds" of radioactive-waste barrels into the sea off Italy.Video.

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

Whether by "earth spirits," UFOs, or advertisers, crop circles have been spinning up speculation since the 1970s—and perhaps never more than now, thanks to Google.

Who—or what—made the first crop circles? What shape proves that at least some crop circles are human made? Test your knowledge of these uncanny artworks.

Strange crop circles have again materialized overnight. But this time they're on Google's home page, prompting speculation that rivals the real things for mystery.

The Lost Symbol, Dan Brown's sequel to The Da Vinci Code, is a puzzle-packed fantasy. But its settings are real, and rife with history, science, and yes, symbols.