A qualified doctor, Christian Jessen holds a degree in sexual health and has also worked extensively on areas such as HIV. He became a household name after appearing on TV shows such as Embarrassing Bodies. The gay physician has also appeared on non-medical reality shows, such as Ready Steady Cook.
Sixteenth-century German scholar Heinrich Cornelius Agrippa was known for his expertise in philosophy and the occult. He also taught at the universities of Pavia and Dôle. His De occulta philosophia suggested magic as a way to reach God. He was eventually branded a heretic and imprisoned.
Paul Schäfer Schneide was a Nazi era German colonel, who at the end of WWII founded an orphanage in West Germany. Charged with child molestation, he fled to Chile, where he established an isolated colony. But charged with child abuse, he had to flee once more before being arrested and convicted on twenty-five counts. He died while serving his term.
Former WHO director-general and one of Forbes’s most powerful women, Margaret Chan was both applauded and criticized for her decision to cull Hong Kong’s entire poultry stock in 3 days to control the H5N1 virus in 1997. She was also in charge during the 2003 SARS outbreak in the city.
A pioneer of physical anthropology, Johann Friedrich Blumenbach laid down one of the first racial classification systems for humans after studying human skulls, dividing mankind into five racial groups. Born into a family of academics, he was a prodigy. He was against scientific racism, though his theory promoted the degenerative hypothesis.
12 Hans Sloane
British doctor Hans Sloane traveled to Jamaica as a personal physician of the 2nd duke of Albermarle and was soon engrossed in the natural species of the region. He documented his collections, and they eventually helped form the British Museum. He is also known as the inventor of drinking chocolate.
Willem Einthoven was a Dutch physiologist and physician whose invention of the electrocardiogram in 1895 earned him the prestigious Nobel Prize in Physiology or Medicine in 1924. He is also credited with theorizing the existence of Einthoven's triangle, which is named in his honor.
15 Robert Lanza
16 Ran Laurie
Antonia Novello became the first female and the first person of Hispanic origin to become the U.S. surgeon general. Initially a pediatric nephrologist, she later switched to Public Health Service, after realizing she was too emotional to be a pediatrician. The Puerto Rican physician was also a UNICEF representative.
The son of a preacher, economist Nicholas Barbon actively participated in reconstructing London following the Great Fire of 1666 and then launched his own insurance company, pioneering fire insurance. As an economist, he penned significant works on the free market and division of labor. He was also a qualified doctor.
22 Hua Tuo
23 Ed Roberts
24 Hans Rosling
28 Alan L. Hart
Eighteenth-century German physician Johann Friedrich Struensee was the official physician of King Christian VII of Denmark, who was mentally unstable. He later started dominating the court and also began an affair with Queen Caroline Matilda. In spite of introducing several reforms, he was eventually beheaded, following a coup.
31 Paul Rée
German author and philosopher Paul Rée, whose writings influenced much of his friend Friedrich Nietzsche’s works, was born to affluent Jewish parents. While he initially studied philosophy and law, Rée later became a physician. He died while hiking on the Swiss Alps, though some feel he had committed suicide.
German biologist and eugenicist Otmar Freiherr von Verschuer was an advocate of racial hygiene and the mandatory sterilization of the physically and mentally disabled. He also led the Nazi experiments on twins based on body parts made available to him from the inmates of various concentration camps.
34 Emin Pasha
Eduard Schnitzer, or Emin Pasha, was born into a German Jewish family in modern-day Poland. A qualified physician, he moved to Constantinople after being disqualified in Germany. He not only served the Ottoman rulers but also surveyed and explored Africa extensively. He was eventually killed by Arab slave raiders.
Maja Einstein is remembered as Albert Einstein’s younger sister and only sibling. After acquiring a Ph.D. in romance languages and literature from Bern, Switzerland, she got married. However, at the beginning of World War II, she fled to the U.S. and remained estranged from her husband till her death.
36 Earle Page
British-American William Thornton was initially trained in medicine and that is when he began drawing and sketching as part of his medical notes. He later won a contest for the design of the Library Company of Philadelphia's new hall. He also designed the Capitol in Washington, D.C.
38 Dr. Sharmila
German-born zoologist and botanist Georg Wilhelm Steller traveled to Russia on a troop ship. He was later part of the Great Northern Expedition, aboard the St. Peter, aimed at locating a sea route from Russia to North America. The Steller’s sea cow, discovered by him, went extinct later.
The son of an East Indian Railways physician, leading Indian scientist and doctor Upendranath Brahmachari was the first to use Urea-Stibamine as a treatment for Kala-azar. Apart from winning honors such as the knighthood and the title of Rai Bahadur, he was also nominated for the Nobel Prize twice.