Home / HowStuffWorks HowStuffWorks Blog HowStuffWorks Centaur Anatomy Revealed: Two Hearts, Six Limbs, One Brain By Robert Lamb, StufftoBlowYourMind.com April 19, 2012 Comment number: 1 Books zombies Zombie Foodies: How Long Does it Take to Grow a Human Brain? By Robert Lamb, StufftoBlowYourMind.com May 13, 2011 Comment number: 2