De Broglie was one of the major scientists of the 20th Century, especially during the physics revolution of the 1910s and 20s. His most influential ideas were in quantum mechanics and the wave-particle duality of light. He was awarded the Nobel Prize in Physics in 1929.
Weller was a scientist who specialised in virology. He was awarded the Nobel Prize in Medicine in 1954 for his work on the Polio virus, which ultimately led to the development of the first successful vaccine by Jonas Salk.
Borlaug is considered one of the most important figures in the Green Revolution as he helped countries such as Mexico and India to increase food security. This saved millions from starvation and he was awarded the Nobel Peace Prize in 1970.
Seaborg was an influential scientist throughout the 20th Century. He discovered 10 different elements, which lead to him being awarded the Nobel Prize in Chemistry in 1951. The element Seaborgium is named after him.