| A | B |
|---|
| Edward Jenner | First Vaccine |
| Sigmund Freud | Father of Psychology |
| Louis Pasteur | Found ways to kill germs and diseases |
| Joseph Lister | First Antiseptic |
| Gregor Mendel | Founder of the study of Genetics (Heredity) |
| John Dalton | Formulated the Atomic Theory and theorized about atoms |
| Charles Darwin | Came up with the Theory of Evolution |
| Heinrich Hertz | Discovered Radio Waves |
| Wilhelm Roentgen | Developed X-Rays |
| Marie and Pierre Curie | Discovered Radium |
| Alexander Graham Bell | Invented the Telephone |
| Guglielmo Marconi | Invented the Wireless Telegraph |
| Thomas Edison | Invented the Electric Light |
| Ivan Pavlov | Proved that human responses could be conditioned (his dogs) |
| G. Daimer and K. Benz | Invented the first Internal Combustion Engine |
| Wilbur and Orville Wright | Invented the First Airplane |
| George Stephenson | Invented the first Train Locomotive |
