Sir Ronald Ross was a British physician and scientist, best known for his groundbreaking work in the field of malaria research. Born on May 13, 1857, in Almora, India, he discovered that the malaria parasite is transmitted to humans through the bite of infected Anopheles mosquitoes. His findings were crucial in understanding how malaria spreads and laid the foundation for future research and prevention efforts. In recognition of his contributions, Ross was awarded the Nobel Prize in Physiology or Medicine in 1902, becoming the first person to receive this honor for work on a disease transmitted by insects. He continued to study various diseases and advocated for public health measures throughout his life, passing away on September 16, 1932.