Professor Jeffrey Lagarias and coauthor Chuanming Zong of Peking University will received the 2015 Levi L. Conant Prize from the American Mathematical Society for their article "Mysteries in Packing Regular Tetrahedra" (Notices of the AMS, December 2012).  The Conant Prize recognizes the best expository paper published in either the Notices of the AMS or the Bulletin of the AMS in the preceding five years.