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1887 – 1975

Julian Huxley was an English evolutionary biologist who is most known for his work writing articles and books about speciation and evolution; he also appeared on television and the radio. Around a hundred years after Charles Darwin and Alfred Russel Wallace described natural selection, Julian Huxley was knighted. Huxley also won several prestigious awards in his field and cofounded the World Wildlife Fund for Nature.

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Julian Huxley changed the world's understanding of evolution by working in many fields of science, including embryology. He was one of the only scientists in the 20th century to believe that speciation was a driving force behind evolution. This belief influenced the world as people began to accept this theory more. He influenced all the fields he worked in: embryology, systematics, and evolution.

Huxley was one of the only scientists of his time to travel for his research. He went across Europe, Africa, and the United States. Huxley also worked at a zoo and became a professor of zoology, which helped develop his interest in animals. Part of this interest was how various species of animals are different and similar.

The term "evolutionary synthesis" is one of the things Huxley is most well-known for. This term was used to refer to a compilation of some of the important science discoveries and subjects in the 1940s. Darwinian theory, biology, and genetics were unified around this time into Huxley's "evolutionary synthesis." This new concept showed a drastic increase in the widespread understanding of the ideas of evolution and speciation.