February 2012
278 posts
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 28th
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Feb 27th
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Feb 27th
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Feb 27th
103 notes
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Feb 27th
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Feb 27th
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Feb 27th
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Feb 27th
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Feb 27th
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Feb 27th
47 notes
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Feb 26th
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Feb 26th
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Feb 26th
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Feb 26th
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Feb 26th
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Feb 26th
28 notes
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Feb 26th
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Feb 26th
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Feb 26th
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Feb 26th
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Feb 25th
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Feb 25th
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Feb 25th
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Feb 25th
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Did you know?
That no matter what size a mammal is, it will have (on average) a very similar number of heartbeats in a lifetime - approximately half a billion.  Large mammals have slow heartbeats and long lives, while small mammals have fast heartbeats and shorter lives; The smallest mammal in the world, the Etrusian Shrew, lives for just 1 year with a heart rate of 835 beats per minute. This means that the...
Feb 25th
52 notes
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Feb 25th
80 notes
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Feb 25th
128 notes
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Feb 25th
40 notes
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Feb 25th
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Feb 25th
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Feb 25th
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Feb 25th
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Feb 25th
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Feb 24th
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Feb 24th
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Feb 24th
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Feb 24th
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Feb 24th
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Feb 24th
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Feb 24th
29 notes