David Pingree, a Fellow of the American Academy of Arts & Sciences since 1971, is University Professor in the department of the history of mathematics at Brown University. He teaches about the transmission of science between cultures, and his publications include many editions of astronomical, astrological, and magical works in Akkadian, Arabic, Greek, Latin, and Sanskrit. Most recently he has written "Arabic Astronomy in Sanskrit" (with T. Kusuba, 2002), "Astral Sciences in Mesopotamia" (with H. Hunger, 1999), and "Babylonian Planetary Omens" (with E. Reiner, 1998).