William H. Brown is emeritus professor of chemistry at Beloit College, where he was twice named Teacher of the Year. His teaching responsibilities include organic chemistry, advanced organic chemistry and, more recently, special topics in pharmacology and drug synthesis. He received his Ph.D. from Columbia University under the direction of Gilbert Stork and did postdoctoral work at California Institute of Technology and the University of Arizona. Eric Anslyn received his Ph.D. from California Institute of Technology. He is the Welch Regents Chair of Chemistry and a University Distinguished Teaching Professor at The University of Texas at Austin, as well as an HHMI Professor. His research focuses on the physical and bioorganic chemistry of synthetic and natural receptors and catalysts. Christopher S. Foote was a professor of chemistry at the University of California, Los Angeles. His scholarly credits included Sloan Fellow; Guggenheim Fellow; ACS Baekland Award; ACS Cope Scholar; Southern California Section ACS Tolman Medal; President, American Society for Photobiology; and Senior Editor, Accounts of Chemical Research. Brent L. Iverson is the Warren J. and Viola Mae Raymer Professor, a University Distinguished Teaching Professor and the dean of the School of Undergraduate Studies at The University of Texas at Austin. His research spans the interface of organic chemistry and molecular biology. His group has developed several patented technologies, including an FDA-approved treatment for late-stage anthrax.