John Rennie was a prominent Scottish civil engineer known for his innovative designs, including the London Bridge and the Thames Tideway Tunnel.
Barbara McClintock, a pioneering American geneticist, revolutionized understanding of genetics through her groundbreaking work on maize.
Niko Tinbergen was a Dutch biologist and ornithologist, known for his pioneering work in animal behavior and ethology, earning him a Nobel Prize in Physiology or Medicine.