Proof confirmed of 400-year-old fruit-stacking problem (Kepler Conjecture) http://www.newscientist.com/article/dn26041-proof-confirmed-of-400yearold-fruitstacking-problem.html?cmpid=RSS%7CNSNS%7C2012-GLOBAL%7Conline-news#.U-tcRFa0bwJ
