It's not rational, but it is a great American nerdy tradition, Pi Day in America, the one day of the year where the month/day/year format adds fun to our lives. The rest of the world can just be grumpy and eat something else.
The worst thing about Pi Day is how it inadvertently legitimizes America's flawed and totally illogical date format.— Freddie Campion (@FreddieCampion) March 14, 2014
Over on MNN, Melissa covered pi in great detail with 8 odd facts about pi
So why is Pi Day green? We have justified it by noting that "As Bucky Fuller would remind you, a circle encloses the maximum area per unit of perimeter, a sphere the maximum volume. It is theoretically the most efficient form," and we are all about efficiency. That's why we start with the Picycle, created by Tang Yau Hoong; it combines the efficiency (and round-ness) of the bike with Pi.
"Mr. Fuller, Why would you build a round house?"
Here is a (dare I day) roundup of round buildings, from not from A to Z but from Bucky to Yurts. More on TreeHugger
Last year our roundup included this important Pi Chart, among other stories.
Two years ago we showed this trivot on which you can cool your pi.
Warren started it all in 2008 with his paean to his favorite thing that goes round, the bicycle.
In case you feel like baking, here is Kelly's recipe for Apple Pi.
While we are discussing Apple Pi, you can join me as I Pi-le on Apple's new round headquarters.
Norman Foster explains Apple Headquarters, sort of
Apple's new headquarters are a vision of the future, from 1939
Our buildings, ourselves: The difference between Apple and Google, represented by their headquarters
One Ring to Bring Them All And In The Darkness Bind Them: Apple's New Headquarters