A seaside stone that had been decorating a home owner's ornamental pond for 15 years might actually be an 80-million-year-old fossilized fish head, experts say.
The pen-tailed tree shrew's 55-million-year bender suggests that humans' taste for alcohol might predate the known advent of brewing some 9,000 years ago.
A lucky penguin survives a long, strange trip; a strangely beautiful oil slick fouls the Mississippi; and more in our weekly roundup of nature news photos.
The guillemot, a seabird that depends on ice, is losing its habitat and falling prey to polar bears desperate for food. Part of Wild Chronicles' Climate Connections series.
A U.S. biotech company's auction fetched more than $135,000 each from four owners eager to clone their canines. Yet opponents say the technology is flawed.
Unprecedented footage captures a great white shark off the coast of South Africa breaching the water's surface to snare a seal during nocturnal hunting.
The concave-eared torrent frog from China is the only known animal that can physically control which frequencies it hears using the biological equivalent of earmuffs, researchers say.
The European Union proposes banning products from seals killed in a "cruel" way. The move targets Canada, where harp seals are killed with rifles, spiked clubs, and other weapons. Warning: video contains graphic imagery.
The twin barn swallows don't show physical features associated with the genetic abnormality, leaving experts unsure how the young birds came to be literally attached at the hip.
