Happy Pi Day!

Pi Day org/via

And why is this on TreeHugger? Because 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. Furthermore it is the law, since Congress passed Resolution 224 celebrating Pi Day. So today we celebrate all things round with, of course, a roundup.

© James Lawrence Powell (used with permission)

Most Important Pie Chart You'll See Today: 13,950 Peer-Reviewed Scientific Articles on Earth's Climate

Out of 13,950 scientific papers published between 1 January 1991 and 9 November 2012, James Lawrence Powell found 24, or 0.17%, or 1 in 581, that clearly reject global warming or endorse a cause other than CO2 emissions for observed warming. That last part is important, as CO2 is central to the mainstream scientific view on global warming.

The pie chart above is a good visual representation of the very strong scientific consensus. More in TreeHugger

© ERS

Rotating Home is a Transcontinental Tri-National Mashup

When you build a Bed and Breakfast by the sea, everyone wants the ocean view. For The Around the Sea project in Prince Edward Island, they solved the problem by building a rotating house. More in TreeHugger

© Brandon Knapp

300 Square Foot Round Cottage Was Built in Just 8 Hours (Video)

If you can build a cottage that's energy efficient, made from sustainable wood, and makes for a fantastic getaway in the great outdoors, awesome. But can you do it in just eight hours? The team at Mandala Homes in British Columbia decided to try, and pulled it off last month. The result is the Round Green Home. More in TreeHugger

Prentice Hospital/ Schicagogeek/CC BY 2.0

The War on Curves: From Phoenix to Chicago to London, Curvy Buildings are Under Attack

I am hesitant to write defending round buildings; the last time I did, a commenter demanded that TreeHugger "get a new writer or an editor that can act as a gate keeper to such poorly informed and even more poorly researched writing." I was simply pointing out that everyone from Bucky Fuller to his disciple Norman Foster and a whole lot of yurt builders have claimed that they are aerodynamic; the air flows around it instead of exerting pressure on flat walls, meaning less infiltration. Others note that a circle encloses the maximum area of any shape for a given perimeter. More in TreeHugger

© Foster and partners/ NBBJ

Our buildings, ourselves: The difference between Apple and Google, represented by their headquarters

Are you a pi person? Would you rather work in the round at Apple or go bump at Google? More in TreeHugger

Evil Mad Scientists/CC BY 2.0

Tags: Holidays