It is Murray Gell-Mann’s 80th birthday today! Congratulations! Gell-Mann is best known as the person who came up with the idea of quarks, the particles that make up (for example) protons and neutrons, the building blocks of atomic nuclei. (He’s known for a lot more than that, of course, and you can read about it online.)
There’s an interview with Tom Siegfried in Science Now in honour of his 80th birthday*. Have a look. (See also an excellent article by Siegfried on Gell-Mann from August, focusing on the quark discovery, and the progress of new scientific ideas.)
*Thanks, Shelley Bonus!