First place I'd like to take you is what many believe will be the world's deepest natural abyss. 我要带大家去的第一个地方是一个天然的深渊，许多人相信它将会被证明为世界最深之渊。 And I say believe because this process is still ongoin

　　An evolutionary biologist at Purdue University named William Muir studied chickens. He was interested in productivity — I think it's something that concerns all of us — but it's easy to measure in c

美国总统奥巴马和国务卿希拉里克林顿纷纷出镜，谈表达的自由。希拉里指出，在美国，任何人都可以自由信仰，自由行动，可以有很强的宗教信仰，也可以有奉行信仰的自由，以及宣传信仰的自由，甚至与别人进行良好辩论的自由。 Secretary Hilary Clinton: 克林顿国务卿： There should be no debate about the simple proposition that vi

In the Reichstag a few moments ago, I saw a display commemorating this 40th anniversary of the Marshall Plan. I was struck by a sign—the sign on a burnt-out, gutted structure that was being rebuilt. I

在这个2009TED大学演讲里，攀岩老手马修查尔志分享了他从攀岩中体会到的9个感悟。这些道理同样适用于海平面上的生活。   Matthew Childs' 9 life lessons from rock climbing It's pretty simple. There are nine, sort of, rules that I discovered after 35 years