SCIENCE IN THE NEWS WEEKLY
Life May Have Begun in Upper Atmosphere
An experiment that simulated chemical reactions in the atmosphere of Saturn's moon Titan suggests that life could have begun in the sky. It was the first experiment to produce amino acids and the nucleotide bases without the need for liquid water, researchers said.
In other space news, astronomers have gotten a rare view of a recent asteroid collision. It was the first time scientists have been able to observe such a collision while it was happening.
Elsewhere, scientists enlisted teenagers to scan thousands of computerized "star plots" in a galactic treasure hunt for pulsars in which two students have hit the jackpot.
And Virgin Galactic's suborbital spaceship Enterprise recently made its first solo test flight. If all continues to go well, it will soon take people on short trips above the atmosphere. The ticket price: $200,000.
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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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