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Shep earned this badge 5 times |
jun 22 '12 at 17:48
Do trees age on a microscopic level?
may 6 '12 at 12:48
Does red light preserve your night vision?
may 5 '12 at 20:38
How fast does the rotor in ATP synthase spin?
may 5 '12 at 14:52
Why do stars disappear when I look at them?
may 5 '12 at 10:12
Why do men have nipples?
