TED演讲:我们为什么做梦(2)
We dream to keep our brains working. 我们为了保证大脑运转而做梦。 The continual activation theory proposes that 持续激活理论提出， your dreams result from your brain's need to constantly consolidate and create long-term memorie
TED演讲:宇宙的灭亡(1)
Looking up at the night sky, we are amazed by how it seems to go on forever. 仰望夜空，我们为它的永无止境而感到惊讶。 But what will the sky look like billions of years from now? 然而数十亿年前的天空又会是什么样子呢
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: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: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:月亮的错觉(2)
For one thing, if this was just the Ebbinghaus effect, 首先，如果真是艾宾浩斯效应， then we would expect the moon illusion to disappear for pilots flying high above the clouds 那么我们应该预期月球错觉对于空中的飞行员来
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
