Gates and his Microsoft co-founder, Paul Allen, used a computer in Harvard's lab to compose what he calls the 'coolest code I've written.' It's now public for the first time.

Mostly sunny. High temperature around 78F. Dew point will be around 49F with an average humidity of 43%. Winds will be 4 mph from the W. Clear. Low temperature around 56F. Dew point will be around 50F ...