This stimulating collection of twenty-two articles is intended not only to explore a range of scientific topics but to engage readers in historiographical debates and methodological issues that surround the study of ancient and medieval science. A convenient sampling of classic and contemporary scholarship, it will appeal to students and specialists alike. Contributors include Francesca Rochberg, David Pingree, G. E. R. Lloyd, Heinrich von Staden, Martin Bernal, Alexander Jones, Bernard Goldstein, Alan Bowen, Owsei Temkin, David Lindberg, Steven McCluskey, Linda Voigts, Edward Grant, Bernard Goldstein, Victor Roberts, Lynn Thorndike, Helen Lemay, William Newman, A. Mark Smith, Nancy Siraisi, Michael McVaugh, and Brian P. Copenhaver.