Bill Gates will be joining Reddit for his fifth Ask Me Anything today at 9 AM PST: http://b-gat.es/2lOqTYc.

Bill and Melinda Gates recently published their latest Annual Letter. This year it’s addressed to their dear friend Warren Buffett, who donated the bulk of his fortune to their foundation in 2006. In the letter, they tell Warren about the impact his amazing gift has had on the world.  Learn more at: http://b-gat.es/2lEDYU0