This afternoon President Obama spoke in the White House Briefing Room on the security situation that has been unfolding since last night: THE PRESIDENT:Good afternoon, everybody. I want to briefly upd

My grandparents are so sweet. 　They hold a special place in my heart. 　They're more precious than gold. 　They worked hard all their lives. 　They sacrificed for my family. 　They raised my parents v

So, my fellow Americans, whatever you may believe, whether you prefer one party or no party, whether you supported my agenda or fought as hard as you against it, our collective future depends on your

我们都身处在由朋友、家人、同事等所构建的庞大的社会网络之中。波士顿哈佛大学医学院的医学社会学家尼古拉斯 克里斯塔基斯Nicholas Christakis追踪发现了一系列的特质──诸如快乐和肥胖──是如何从一个人传递到另一个人的，解释了你在社会网络中所处的地位是如何以你意想不到的方式影响着你的生活。 Nicholas Christakis：The hidden influence of socia

I was on a three-month road trip this summer. 今年夏天我度了三个月的假。 It was something that I've been dreaming about doing my whole life, 这是我一生梦寐以求的东西， just driving around the U.S. and Canada and just figuring