SCIENCE IN THE NEWS WEEKLY
New Fossil Finds in Texas, Denmark, Yemen
A fossil rediscovered in the National Museum of Natural History in Washington, D.C., could provide new insights into the origins of modern amphibians. Experts say the 290-million-year-old fossil, found in Texas in the 1990s, suggests the creature had features of both frogs and salamanders.
Elsewhere, Danish scientists reported the oldest and most northerly fossil of a parrot ever discovered. Found on Denmark's Isle of Mors, the fossil is estimated to be 54 million years old.
And dinosaur footprints have been found for the first time on the Arabian Peninsula. The 150-million-year-old tracks—more than 100 in all—were made by plant-eating ornithopods and sauropods. The footprints are said to suggest herding behavior along a coastal mudflat in the late Jurassic period.
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PODCASTS: Expanding With the Cosmos
Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.
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