To commemorate Pi Day we’ve compiled 3 of our best-selling Pi topic issues from our archive.
Plus a FREE Bonus Issue in honor of Einstein’s Birthday!

Scientific American May 2003: A Digital Slice of Pi
The new way to do pure math: experimentally
 
Scientific American July 1960: Mathematical Games
Incidental information about the extraordinary number pi
 
Scientific American February 1988: Ramanujan and Pi
Some 75 years ago an Indian mathematical genius developed ways of calculating pi with extraordinary efficiency. His approach is now incorporated in computer algorithms yielding millions of digits of pi
 
Plus Free Bonus Issue!
Scientific American September 2004 Issue: Beyond Einstein
An entire Scientific American issue dedicated to Albert Einstein