TED演讲:宇宙的灭亡(2)

This dark energy doesn't behave like any other substance we know at all and acts more like antigravity force. 这种暗能量的性质与我们所熟知的其他物质完全不同，它更像是反重力。 We say that it has a gravitational pressure

TED演讲:在外太空自由落体

Have you ever been floating in a swimming pool, all comfy and warm, 你是否曾经浮在游泳池里，感觉非常惬意，暖洋洋得， thinking, Man, it'd be cool to be an astronaut! 想着，天啦，当一名宇航员太爽了！ You could fl

TED演讲:地球的年龄有多大(1)

How old is the Earth? 地球的年龄有多大？ Well, by counting the number of isotopes in a sample of rock that's undergone radioactive decay, 通过对岩石样品中正经历着放射衰变的同位素计数， geologists have estimated the Ear

TED演讲:月亮的错觉(1)

Have you ever noticed how the full moon looks bigger when it's near the horizon than when it's high over head? 你注意到了吗？满月在接近地平线时比高挂空中时看起来大一些。 If so, you're not alone. 如果你注意到了，你就

TED演讲:宇宙有中心吗(1)

What is at the center of the universe? 宇宙的中心是什么？ It's an essential question that humans have been wondering about for centuries. 这是个很重要的问题，几百年来，人们一直在探索。 But the journey toward an answer

TED演讲:宇宙有中心吗(2)

Shortly after Copernicus, in the 1580s, an Italian friar, Giordano Bruno, 哥白尼死后不久，在十六世纪80年代，意大利修道士焦尔达诺布鲁诺提出， suggested the stars were suns that likely had their own planets and that the

TED演讲:4种声音影响我们的方式(1)

Over the next five minutes, 在接下来的5分钟里 my intention is to transform your relationship with sound. 我想把你们与声音的关系作个转变 Let me start with the observation that most of the sound around us is accidental, 首先，请

TED演讲:4种声音影响我们的方式(2)

I want to spend just a moment talking about 我想只花一点点时间来谈论 the model that we've developed, which allows us to start at the top 我们所发展而来的那个模型，那个允许我们从高处开始的模型 and look at the dri

TED演讲:如何重新设计公寓建筑(1)

When, in 1960, still a student, 1960年我还是学生时， I got a traveling fellowship 拿到出国留学的奖学金， to study housing in North America. 研究北美的住宅建筑。 We traveled the country. 我们游遍美国， We saw public

TED演讲:如何重新设计公寓建筑(2)

And then we decided to take New York as a test case, 后来我们决定拿纽约做实验案例， and we looked at Lower Manhattan. 研究曼哈顿下城。 And we mapped all the building area in Manhattan. 我们画出曼哈顿建筑区的地图。

TED演讲:为什么好的黑客可以塑造好的公民(1)

I'm going to talk about hackers. And the image that comes to your mind when I say that word is probably not 今天我要谈的是有关黑客的话题。 当我说到黑客这个词的时候 你脑中所出现的画面可能不会是 of Benjamin Fran

TED演讲:地球的年龄有多大(2)

The United States of America's Declaration of Independence would be signed in the last half-inch. 美国的独立宣言签署在最后的半英寸。 Or if we compared geologic time to a woman stretching her arms to a span of six feet, 如果我们将地

TED演讲:为什么好的黑客可以塑造好的公民(2)

Now the site itself was easy enough to build, 网站本身是容易建成的， but the team was faced with the challenge of how they populate all of the content. 但团队面临的挑战是 他们如何填充所有内容。 It would have taken the t

TED演讲:为什么巴士体现了一种民主实践(1)

Mobility in developing world cities 在世界上发展中国家城市里 is a very peculiar challenge, 流动性是一个非常严峻的挑战 because different from health 因为它和健康 or education or housing, 教育或住房不同 it tends to

TED演讲:为什么巴士体现了一种民主实践(2)

They also have great capacity. 它们有很大的容量 For example, this system in Guangzhou 例如，这系统在广州 is moving more passengers our direction 比中国所有的地铁线路 than all subway lines in China, 能运送更多的乘客

TED演讲:为什么巴士体现了一种民主实践(3)

Only 20 years later, 仅仅20年后 between 1920 and 1930, 1920年至1930年间 almost 200,000 people 近 20万人 were killed by cars in the United States. 在美国死于车祸 Only in 1925, almost 7,000 children 在 1925年，近7000名儿童 were

TED演讲:城市与企业中的奇妙数学(2)

So here's two questions 每当我思考这个问题 that I have in my head when I think about this problem. 两个疑问一直在我脑子里打转 The first is: 第一 Are cities part of biology? 城市是生物界的一部分吗 Is London a great b

TED演讲:城市与企业中的奇妙数学(3)

Before I talk about that, 谈到这之前 I've written down at the bottom there 我在底下标出了 the slope of this curve, this straight line. 这条曲线的斜率，即这条直线 It's three-quarters, roughly, 大约为3比4 which is less than

TED演讲:城市与企业中的奇妙数学(4)

It goes up by 15 percent, 对于所有事物都是如此 and you have a 15 percent savings 你还能节省 on the infrastructure. 15%的基础设施经费 This, no doubt, is the reason 这无疑就是 why a million people a week are gathering in citi

TED演讲:如何食用我们的地貌(1)

The will to live life differently can start 想把生命活得与众不同的愿望 in some of the most unusual places. 能够在一些不平凡的地方实现 This is where I come from, Todmorden. 这是我的家乡，托德莫登 It's a market town