Book excerpt: Never has the term mad scientist been more fascinatingly explored than in internationally recognized popular science author Clifford Pickover's richly researched wild ride through the bizarre lives of eccentric geniuses. A few highlights: "The Pigeon Man from Manhattan" Legendary inventor Nikola Tesla had abnormally long thumbs, a peculiar love of pigeons, and a horror of women's pearls. "The Worm Man from Devonshire" Forefather of modern electric-circuit design Oliver Heaviside furnished his home with granite blocks and sometimes consumed only milk for days (as did Nikola Tesla and Thomas Edison). "The Rabbit-Eater from Lichfield" Renowned scholar Samuel Johnson had so many tics and quirks that some mistook him for an idiot. In fact, his behavior matches modern definitions of obsessive-compulsive disorder and Tourette's syndrome. Pickover also addresses many provocative topics: the link between genius and madness, the role the brain plays in alien abduction and religious experiences, UFOs, cryonics -- even the whereabouts of Einstein's brain!