Widely regarded as one of the most influential personalities in the history of mankind, Charles Darwin was an English biologist, naturalist, and geologist. He is credited with publishing the Theory of Evolution, which explains the evolution of life from a unicellular organism to human beings. A prolific writer, Charles Darwin also wrote important books on plants and barnacles.
British paleoanthropologist Mary Leakey had exhibited her interest in drawing and archaeology as a kid. Most of her career was spent working alongside her husband, Louis Leakey. She was in charge of many excavation projects in Kenya. Her discoveries include the first Proconsul skull fossil and 15 new animal species.
British embryologist C.H. Waddington had studied paleontology before turning to biology. A professor of zoology and embryology, he later also taught animal genetics. His interests also included poetry, painting, and Marxism. He introduced concepts such as epigenetic landscape and genetic assimilation, and penned books such as Principles of Embryology.