During a geology field trip in 2004, the professor told his students that a road-cut featuring rock formations near Pittsburgh International Airport was a great place to find plant fossils. (Today)

Looking back in time sounds like pure science fiction, but that's what happens every time you see a star. The light producing that image has been traveling through time for thousands, millions, even billions of years, depending on how far away the star was at the time. (Today)

The word "phocomelia" means seal limb. It describes an extremely rare condition in which babies are born with limbs that look like flippers. (Today)

In the middle of a terrifying desert north of Tibet, Chinese archaeologists have excavated an extraordinary cemetery. Its inhabitants died almost 4,000 years ago, yet their bodies have been well preserved by the dry air. (Today)

Paleontologists at the Carnegie Museum of Natural History have described a new species of early terrestrial amphibian whose fossilized skull was found in 2004 near Pittsburgh International Airport and named after the University of Pittsburgh student who found it and the FedEx Corp., which owns the property where it was discovered (Yesterday)