May 8, 2007 4:45 P.M. EDT PRESIDENT BUSH: I appreciate very much the President of Haiti joining us here in the Oval Office. Mr. President, welcome. I thank you for your courage. I thank you for having

And there's been a bunch of interesting studies recently that have shown this playing around is really a kind of experimental research program. 最近有很多有意思的研究显示了孩子的随意尝试，的确可以作为一个研究项目。 Here's one from Cris

I see it in the Dreamer who stays up late at night to finish her science project, and the teacher who comes in early maybe it was some extra supplies that she bought, because she knows that that young

This internal sense of rightness that we all experience so often 我们心中时常感觉到的理直气壮的感觉， is not a reliable guide to what is actually going on in the external world. 在真实世界中并不是个可靠的向导。 And when we act like it

研究者卡迈勒.米艾涛向我们展示了如何通过在家居或写字楼的特定地点安放三种常见的室内植物，从而产生卓越的空气净化效果。Kamal Meattle on how to grow fresh air 怎么样生产新鲜空气Some 17 years ago, I became allergic to Delhi's air. My doctors told me that my lung capacity