TED演讲:摩尔有多大(1)

OK, today we're going to talk about the mole. 今天我们来谈一下摩尔。 Now, I know what you're thinking: I know what a mole is, 我知道你现在在想：我知道摩尔是什么， it's a small furry creature that digs holes in the ground

TED演讲:摩尔有多大(2)

Now, back to the mole. Not that mole. 现在，回到摩尔，不是鼹鼠。 This mole. Yep, this number has a second name.The mole. 这个摩尔，没错，这个常数有另一个名字,摩尔. Chemists use the term mole to refer to the quantities

TED演讲:对最近气候趋势的警告(2)

And one reason is, this enormous heat sink heats up Greenland from the north. 有一个原因，北方沉积的大量热能加热了格陵兰岛。 This is an annual melting river. But the volumes are much larger than ever. 这是一条每年融化的河

TED演讲：单词的诞生(6)

And we see these amazing structures -- these little knots of two colors of thread we call social hot spots. 我们看见令人惊讶的结构，这是两种颜色的小结点，我们把它称为社交热点 The spiral thread we call a solo hot spot.

TED演讲：单词的诞生(3)

In order to convert this opaque, 90,000 hours of video into something that we could start to see, 为了把这个9万小时的录像变成我们能识辨的东西 we use motion analysis to pull out, as we move through space and through time, what we

TED演讲:人如果不喝水会怎么样(3)

For a long time, conventional wisdom said that we should drink eight glasses a day. 长久以来，一般观念都认为我们每天要喝8杯水， That estimate has since been fine-tuned. 但这个数据已被重新调整过。 Now, the consensus i

TED演讲:人如果不喝水会怎么样(1)

Water is virtually everywhere, from soil moisture and ice caps, to the cells inside our own bodies. 水几乎无所不在，从土壤水分及冰帽，到人体内的细胞。 Depending on factors like location, fat index, age, and sex, the average h

TED演讲:为什么油水不能混合(2)

As liquid water, these molecules are engaged in a constant and random square dance that is called the hydrogen bonding network. 作为液态水，这些分子从事着恒定而随机的被称为氢键网络的方块舞。 Entropy favors keeping the s

TED演讲:为什么油水不能混合(1)

Why does salt dissolve in water but oil doesn't? 为什么盐可溶于水而油却不行呢？ Well, in a word,chemistry. But that's not very satisfied, isn't it? 总的来说，是化学作用。但这并不令人满意，对吧？ Well, the reason

TED演讲:可持续性的投资逻辑(4)

So awesome, right? Another example is Pentair. Pentair is a U.S. industrial conglomerate. 很棒，对吧？另一个例子是滨特尔。滨特尔是美国的工业集团。 And about a decade ago,they sold their core power tools business and reinve

TED演讲:特殊环境里的不同寻常的房子(8)

Like Makoko and the Torre David, 像马卡卡和托雷大卫一样， throughout the Zabbaleen you'll find all the same facilities as in any typical neighborhood. 通过扎巴林你可以发现在任何典型的社区里都完全一样的设施。 Th

TED演讲:特殊环境里的不同寻常的房子(5)

While it may appear to be a completely chaotic place, 虽然它看上去好像是一个很混乱的地方， when you see it from above, there seems to be a whole grid of waterways and canals connecting each and every home. 但当你从上往下看，那

TED演讲 :飞向海洋(4)

And then by moving through the water it's able to take that control. 通过在水中的运动，它能够控制自如。 Now, look at that; look, it's she just blew me away. 现在，看，看她刚刚把我刮走了。 She just rolled right away fro

TED演讲:探索世界最深洞穴(2)

From the entrance, this is nothing like a commercial cave. 从洞口看，这绝不像个商业旅游的山洞。 You're looking at Camp Two in a place called J2, not K2, but J2. 你看到的是二号营地，它搭在J2,不是K2(世界第二高峰）

TED演讲:变得更健康的不能说的秘密(1)

Whenever I get to travel for work, 无论何时外出工作， I try to find out where my drinking water comes from, and where my poop and pee go. 我都会尝试弄清我饮用水的来源，还有我排泄物的去处。 This has earned me the nick

TED演讲：人类为什么要重返火星

I want to talk about 4.6 billion years of history in 18 minutes. That's 300 million years per minute. Let's start with the first photograph NASA obtained of planet Mars. This is fly-by, Mariner IV. It was taken in 1965. When this picture appeared, th

TED演讲：揭露海底惊奇(4)

So, we're learning lots new from the shallow water. 我们从浅海中学到了很多新东西。 Still exploring the deep, but learning lots from the shallow water. 继续来探索下深海领域，同时从浅海中学到很多新东西。 There's

TED演讲:本世纪最大的不公(7)

So you see how transformative 你已经看到了 little bits of help can be. 微薄的帮助如何带来巨变。 But I want to give you a reality check. 但我还要给你们看看事实。 Look: U.S. aid, helping people is not easy, 美国援助，助

TED演讲:用玩具创造世界(2)

And you actually start this game in a drop of water, 其实是从一滴水里开始这个游戏的， as a very, very small single-cell creature, 这时你还是一个很小很小的单细胞生物， and right off the bat you basically just have to

TED演讲：细菌是怎样交流的(4)

The reason that Vibrio fischeri is doing that comes from the biology. 费氏弧菌的发光现象来自生物学上的原因。 So again, another plug for the animals in the ocean, Vibrio fischeri lives in this squid. 接下来，我们再来看一个海