Friday, December 14, 2007

Scientific American, December 2007

Are We Living with Alien Cells?
All life on Earth is generally understood to have descended from a common ancestor. But if cells evolved independently more than once, some microbes radically different from all known organisms might still survive in extreme environments of our planet. The search is on for evidence of these strangers.

Window on the Extreme Universe
The GLAST satellite is about to open up an unexplored region of the electromagnetic spectrum, where dark matter and other mysteries might be seen.

Making Carbon Markets Work
Limiting climate change without damaging the world economy depends on stronger and smarter market signals to regulate carbon dioxide.

Diet Advice from DNA?
Are personalized diets based on genetic tests cutting-edge science or high-tech horoscopes?

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