1. Heart Transplant Surgery   Ronald Ross   Christian Barnard   Sir Humphry Davy   Charles Darwin   Hint Half-n-half Clue   2. Laws of Heredity   Gregor Mendel   Henry Cavendish   Sir Humphry Davy   Michael Faraday   Half-n-half Clue   3. Magnesium   Ronald Ross   Sir Humphry Davy   Henry Cavendish   Charles Darwin   Half-n-half Clue   4. Laws of Planetary Motion   Enrico Fermi   Sir Humphry Davy   Johan Kepler   Euclid   Half-n-half Clue   5. Blood Circulation   Hans Christian   Henry Cavendish   Wilhelm K. Roentgen   William Harvey   Half-n-half Clue   6. Modern Theory of Atomic Structure   Sigmund Freud   Neels H. D. Bohr   Sir Humphry Davy   Ronald Ross   Half-n-half Clue   7. Sodium   Alexander Fleming   Sigmund Freud   Christian Barnard   Sir Humphry Davy   Half-n-half Clue