Episode: 1971 In which Lame, Cauchy, and Kummer race to prove Fermat's last theorem.  Today, guest scientist Andrew Boyd relives a race.

Episode: 3029 Model Citizen. Today, lets talk about models.

Episode: 3241 Green with Immortality. Today, we go green with immortality.

Episode: 1156 We mirror machine mirrors we mirror machine mirrors we ... Today, an analogy game.

Episode: 1154 In which Adam's navel poses the question of pre-creation history. Today, a silly question about Adam's navel paves the way for evolution.

Episode: 1153 Grosseteste, Bacon, and the rise of realism. Today, Robert Grosseteste, Roger Bacon, and cyberspace.

Episode: 1152 Macbeth, populism, and insanity. Today, Shakespeare tells us how to stay sane.

Episode: 1961 The Four-Color Problem -- an strange old puzzle, almost resolved. Today, guest scientist Andrew Boyd colors maps.

Episode: 3121 Charles Nicolle and the Transmission of Typhus. Today, wegettyphus.

Episode: 2985 Relative Accuracy. Today, we'll question the virtue of accuracy.