Hi everybody.In America, we believe that a lifetime of hard work and responsibility should be rewarded with a shot at a secure, dignified retirement.It's one of the critical components of middle-class

Weekly Address: Continuing Work to Improve Community Policing (August 15, 2015) 奥巴马每周电视演讲：继续努力整顿社区警务 Hi everybody. It’s now been a year since the tragic death of Michael Brown in Ferguson, Misso

Over the course of three years, we recorded eight to 10 hours a day, 历经3年的时间，我们每天记录8到10个小时 amassing roughly a quarter-million hours of multi-track audio and video. 积累了大约25万小时的多轨音频和视频资料 So you're looki

President Bush's radio address on December 20 THE PRESIDENT: Good morning. Every year during the holidays, families across America gather to celebrate our blessings -- and we unite to share those bles

And the second point I want to make, the final point, is that -- and it's actually been a theme of TEDMED 我想说的第二点，也是最后一点，实际上就是TEDMED的主题-- that joy is so important to your health, that very few of thes