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SN Online

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7:44pm, November 29, 2012

GENES & CELLS
Understanding inherited conditions is proving to be difficult. See “Rare genetic tweaks may not be behind common diseases.”

ATOM & COSMOS
Titan and other moons may be crash debris. See “Violent birth proposed for Saturn’s moon mishmash.”

BODY & BRAIN
An invasive surgery works best for some. Read “Heart bypass surgery outperforms stents in diabetics.”

EARTH
A deluge of freshwater may have triggered a cold spell 13,000 years ago. See “New pathway proposed for ancient flood.”

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