In 2008, shortly after Bill Gates stepped down from his executive role at Microsoft, he often awoke in his 66,000-square-foot home on the eastern bank of Lake Washington and walked downstairs to his private gym in a baggy T-shirt, shorts, sneakers and black socks yanked up to the midcalf. Then, during an hour on the treadmill, Gates, a self-described nerd, would pass the time by watching DVDs from the Teaching Company’s “Great Courses” series. On some mornings, he would learn about geology or meteorology; on others, it would be oceanography or U.S. history.

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via So Bill Gates Has This Idea for a History Class … – NYTimes.com.