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SCIENCE IN THE NEWS DAILY

New Dinosaur May Link S. American, Aussie Dinos

A rare fossil found in Australia suggests dinosaurs were able to trek north across a vast continent, scientists report.

The hundred-million-year-old fossil belonged to a two-legged meat-eater, or theropod, that is closely related to Megaraptor namunhuaiquii, a giant, big-clawed carnivore from Argentina, says a team led by Nathan Smith of the University of Chicago's Field Museum. The discovery could help redraw the world map during the dinosaur era, researchers add.

That's because the newfound Australian dinosaur shows that animals could travel across the prehistoric supercontinent of Gondwana during the Cretaceous period, about 145 to 65 million years ago. This in turn suggests that Gondwana's Southern Hemisphere landmasses broke up later than traditionally thought.

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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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