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No Signs of Water Yet from Mars Lander

from the Los Angeles Times (Registration Required)

In its first chemical analysis of soil from Mars' northern plains, NASA's Phoenix lander has turned up no evidence of water, scientists said Monday.

Still, researchers remained confident that the craft is in the right place to uncover veins of ice believed to lie only inches beneath the surface.

A soil sample was cooked twice in one of Phoenix's eight ovens over the last few days, according to William Boynton, lead scientist for the Thermal and Evolved-Gas Analyzer, or TEGA. ... "Had there been any ice, it would have melted," Boynton said. "We saw no water in the soil whatsoever."

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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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