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Whereas many people may celebrate March 14th by eating the math holiday's homophonic equivalent (pies), Scientific American suggests exercising your mathematical prowess with 4 puzzles from Martin Gardner's article,
A Quarter-Century of Recreational Mathematics.
Not only are we paying tribute to the most famous irrational number around, but we also want to draw attention to a truly rational concept -- the scientific pursuit for a cleaner earth.
Learn about New Solutions for Clean Energy
, our latest In-Depth Report. As companion reading, we suggest Scientific American's
A Plan for a Sustainable Future.
All PDFs are complimentary downloads, normally only available with a SciAmDigital.com subscription.