Krebs cycle and other bicycles not allowed on railings.
Via tumblr, biology tag but found all over the place. i.e. can’t find original source.
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October 10, 2011
In case you ever want to see Pi to the first one million digits.
Here’s the start:
And to see it all in its one million glory, then just click here. (From Piday.org)
popperfont.net 