On Wednesday, America's Barry Sharpless was awarded the Nobel Prize in Chemistry for his work on “click chemistry”, becoming only the fifth person to win the prize for the second time. He first received the Nobel Prize in Chemistry in 2001 for his work on "chirally catalysed oxidation reactions."
Here's a look at the other four people who have received the Nobel twice:
Marie Curie
Known as the mother of modern physics, Marie Curie was the first woman ever to win Nobel prizes for her work. She first received the prestigious award in Physics, along with her husband Pierre Curie