Hi, everybody. Over the past seven years, we haven't just been recovering from crisis, we've been rebuilding our economy on a new foundation for growth – growth that benefits everybody, not ju

Now, Sal is a pretty humble guy. And so when he came to the White House he said, “You know, I didn’t do anything special.” He said he was just doing his job, that he didn’t do

In Brussels today at NATO Headquarters, Vice President Biden stated his purpose at the meeting: "I came to listen." What we want to learn is what your countries believe are working, what you

And then in later experiments, we found the opposite, 而在随后的实验中，我们发现了相反的情况， that fir was sending more carbon to birch than birch was sending to fir, 花旗松给纸皮桦送的碳比纸皮桦给它的碳多， and this was because the fir wa

Look, I had second thoughts, really, 说实话，我犹豫过 about whether I could talk about this 到底应不应该 to such a vital and alive audience as you guys. 对你们一群如此有活力的观众讲这个题目。 Then I remembered the quote from Gloria S