Ladies and Gentlemen, this is Joe Biden and I'm here filling in for President Obama, who is traveling abroad. And I'm here with a simple message: middle-class economics works. Our economy has gone fro
Ze Frank在Ted英语演讲：你是人类么？(中英双语+) (Music) This is the human test, a test to see if you are a human. Please raise your hand if something applies to you. Are we agreed? Yes? Then let's begin. （音乐）这是个人类测试，
President Bush Discusses Conservation and the Environment THE PRESIDENT: Thank you all. Please be seated. Thank you for coming, and Happy New Year. Laura and I thank all of our distinguished guests, s
Politicians have recently begun Twittering. In fact, there's 47 members of Congress who currently have Twitter accounts. And they're Tweeting, in some cases, from behind closed-door sessions w
