Sally Ride

1951-2012
Physicist and astronaut, the first American woman in space, where as a mission specialist she helped to launch satellites and conduct scientific experiments.
Alan Turing

1912–1954
British cryptanalyst, logician, philosopher and mathematician widely recognized as a pioneer of artificial intelligence and the father of computer science.
Magnus Hirschfeld

1868-1935
Pioneering German physician and sexologist, outspoken advocate for sexual minorities, important theorist of sexuality, and a prominent advocate for sexuality minorities in the early 20th century.
Oliver Sacks

1933-2015
Neurologist, naturalist, historian of science and author who wrote of his experiences with some of his patients to inform and inspire others.