Published by the Pacific Institute for the Mathematical Sciences, Pi in the Sky has the goals of "promoting mathematics, (...) increasing the involvement of high school students in mathematical activities, and promoting careers in mathematical sciences." Released online on roughly a biannual basis, the periodical can be freely downloaded from this site. The March 2003 issue contains articles about math in martial arts, probability concepts in gambling, and many more. Every edition of Pi in the Sky dating back to its inaugural issue in 2000 is available, and each has several articles contributed by prominent figures in mathematics and related areas. The September 2002 issue even featured an article written by none other than Gary Kasparov, the famous world chess champion.