Methylphenidate, sold under various trade names, Ritalin being one of the most commonly known, is a central nervous system (CNS) stimulant of the phenethylamine and piperidine classes that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. The original patent was owned by CIBA, now Novartis Corporation.
John Wayne (born Marion Robert Morrison), nicknamed Duke, was a legendary Hollywood actor who played a key role in establishing and popularizing the western genre in American cinema. He started working in films as a scenery mover to put himself through college.
Mae Jemison (born October 17, 1956) American physician and NASA astronaut known for being the first black woman to travel in space. Marie Maynard Daly (April 16, 1921 â October 28, 2003) The first African American woman to earn a Ph.D. in Chemistry. American inventor and engineer, best remembered for his invention of the multiple-effect evaporator. American ophthalmologist and inventor known for being the first African American woman doctor to receive a patent for a medical invention.