Summary: American Stonehenge: Monumental Instructions for the Post-Apocalypse, Ants inhabit 'world without sex', Chewing gum raises kids' math scores, Did lead cause global cooling?, First dino 'blood' extracted from ancient bone, Sun at its dimmest for nearly a century, say scientists, Miss Saudi Arabia pageant searches for a different type of beauty, America's Secret Plan to Invade Canada, Kiwis' passion for a note of cat's pee in sauvignon blanc
