Who is the only person to win both an Ig Nobel Prize and a Nobel Prize?

The Ig Nobel Prizes began in 1991 and are awarded for seemingly trivial or amusing advances in research. They are organised by the Annals of Improbable Research, a US publication which takes a humorous approach to science. Andre Geim (Russia), won an Ig Nobel in 2000 for levitating a frog using magnets. Geim then won a Nobel Prize in Physics in 2010 for his research into graphene.