Four years ago, my lovely wife Gauri and me decided to have a third child. 四年前，我和我太太高丽决定要第三个孩子。 It was claimed on the net that he was the love child of our first child who was 15 years old. 结果网上居然说，那是

Today, we stand at a defining moment in our history. With seven straight months of job loss; the highest percentage of homes in foreclosure since the Great Depression; family incomes down $1,000 and t

It is good to be back here with all of you. I've got a few acknowledgments I've got to make before I say what I've got to say. First of all, somebody who has served our country with the kind of distin

Hi, everybody. 大家好。 This week, I spent a couple days in Minneapolis, talking with people about their lives-their concerns, their successes, and their hopes for the future. 本周，我在明尼波利斯呆了几天，与人们谈论他们的生活--他

I'm here today to talk about the two ideas that, at least based on my observations at Khan Academy, 今天，我要分享两个观点，至少基于我对可汗学院的观察得出的， are kind of the core, or the key leverage points for learning. 有关于学习的核