U.S. Department of Education @usedgov
Percy Julian was a scientist & innovator who broke down barriers for future scientists. His inventions range from the fire retardant Aerofoam to treatments for glaucoma & rheumatoid arthritis. Read about his journey from @uspto: https://t.co/0k8EhQLjSN #BlackHistoryMonth https://t.co/rzlMl2zt6m — PolitiTweet.org