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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PODCAST & VIDEO: 3D Printing Replacement Body Parts
Regenerative medicine, a fledgling field with the aim of regrowing parts from a person’s own cells, is being amplified with 3D-printing technology, which can now use organic materials to create scaffolds that cells need to grow into their final forms. Richard Wysk, a professor of industrial and systems engineering at North Carolina State University, discusses the latest successes with this research, and the timeline for creating more complicated structures.
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