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Cyrus McCormick
Cyrus Hall McCormick invented the mechanical reaper, which combined all the steps that earlier harvesting machines had performed separately. His timesaving invention allowed farmers to more than double their crop size and spurred innovations in farm machinery. Learn more about Cyrus McCormick here! -
Maria Mitchell
Maria Mitchell gazed through her telescope from the rooftop of her home and discovered a comet, thus becoming the first person to find a comet by telescope. Learn more about Maria Mitchell here! -
Louis Pasteur
Pasteur founded the science of microbiology and proved that most infectious diseases are caused by micro-organisms. This became known as the "germ theory" of disease. He was the inventor of the process of pasteurization and also developed vaccines for several diseases including rabies. Learn more about Louis Pasteur here! -
Jonas Salk
Dr. Jonas Salk developed a vaccine that once and for all eradicated polio. learn more about Salk here! -
Bill Gates
Developed Microsoft, a software program, that changed how we use computers to this day. Learn more about Bill Gates here!
