A childlike robot and six-legged machine display the latest in human-robot interaction in London. One responds to touch with its "heart." The other robot focuses on faces.
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 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.
The total length of the underground calcite river is still unknown, though a recent expedition surveyed several thousand more feet of the odd formation in New Mexico Cave.
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.
Disemboweled and decorated with scarlet paint and metal eye plates, the centuries-old man was found with slingshots, a figurine of himself, and other artifacts. A National Geographic News exclusive.
An Australian veterinarian recently helped save an endangered grey nurse shark by sticking his arm down the shark's throat and dislodging a steel hook.
