State of the sexual union.

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• Naughty Nursing Homes Is it time to let the elderly have more sex?
  Daniel Engber Sept. 27, 2007
  
• Cancer Sluts Does the HPV vaccine "promote" promiscuity?
  Meghan O'Rourke Sept. 27, 2007
  
• Pas de Deux Why are there only two sexes?
  Amanda Schaffer Sept. 27, 2007
  
• Is Mad Cow an STD? No, but the government seems to think it is.
  Juliet Lapidos Sept. 26, 2007
  
• The Best "Human Nature" Sex Stories of 2007 Incest, virgin births, gay sheep, and avatar affairs.
  William Saletan Sept. 26, 2007
  
• The Allure of the Whip The long and curious history of arousal.
  Thomas Laqueur Sept. 26, 2007
  
• Don't Ask the Sexperts Dan Savage, Dr. Ruth, and others on what still mystifies them.
  Morgan Smith Sept. 26, 2007
  
• American Sex Portrait Fifty years after Alfred Kinsey, what more do we know?
  Amanda Schaffer Sept. 26, 2007
  
• Oh, That Darling Derrière A history of the buttocks, in pictures (of course).
  Teresa Riordan Sept. 26, 2007
  
• Sex and More Sex The science and smut we have in store for you.
  Sept. 26, 2007