More insects belong to the order Coleoptera (beetles) than any other.
Today's Question:
What are the four strokes necessary to run an internal combustion engine?
I believe it goes something like this: downstroke as fuel/air mix comes in the intake valve, upstroke pushes fuel mix upward and compresses it, sparkplug fires and mix explodes pushing the piston downward again, and then the momentum pushes it upward again pushing the exploded fuel out the exhaust valve.
(Sources: American Mensa, email transmission, September 14, 2011; http://www.insects.org/; http://www.cals.ncsu.edu/course/ent425/compendium/coleop~1.html; http://www.lesinsectesduquebec.com, http://www.bimmerfest.com)
Compiled by Otto Ladensack
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