The Answer:

The youngest person to receive a Nobel prize was Sir William Lawrence Bragg (Physics, 1915). He was 25 years old at the time. Bragg and his father, Sir William Henry Bragg, won the award jointly for their work with X-ray spectra, X-ray diffraction, and crystal structure. The oldest person to receive the prize was Joseph Rotblat (Peace, 1995) for his work with the Pugwash Conferences on Science and World Affairs. He was 87 years old at the time.

Read more about the Nobel prize in our almanac, or visit the Nobel e-Museum for additional information.

—The Editors