SCIENCE IN THE NEWS DAILY
Mars Phoenix to Try Shake-and-Bake Once More
from the Los Angeles Times (Registration Required)
In a series of maneuvers that sounds more like cooking class than research on Mars, scientists said Monday they would try one more time to shake bits of the clumpy Martian soil into a test oven on NASA's Phoenix lander before switching to a backup strategy that called for dribbling the soil into the oven.
Scientists have failed in two attempts to inject soil from the Martian north pole into one of eight tiny ovens designed to test for organic compounds that would prove Mars' suitability for life.
The problem is, the opening to the oven is about the thickness of a pencil lead. The Martian soil is proving to be much clumpier -- cemented, in scientific terms -- than expected.
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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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