Protection of the Environment Once man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be unlimited. Today things are

Kelly McGonigal: How to make stress your friend 如何让压力成为朋友I have a confession to make, but first, I want you to make a little confession to me. In the past year, I want you to just raise your hand我要坦白一

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-c

As a civilization, we will have so many gifts, just as you as individuals have so many individual gifts as you sit before me. 作为文明人，我们会拥有如此之多的天赋，就像是坐在我面前的你们，每一个生命个体都拥有许多独特的夭赋。 How will you use these g

February 26, 2008 THE PRESIDENT: Thanks for coming. I appreciate the warm welcome. Last Thursday Laura and I returned from a six-day visit to Africa. It happened to be her fifth visit, and my second.