TED演讲:抗击癌症的新式武器(4)
But there is one more big obstacle we have to think about. 但前方还有一个大障碍需要跨越。 In fact, it may be the biggest obstacle of all. 而且，也许是最大的一个障碍。 How do we deploy this superweapon? 我们该如何部署
TED演讲:抗击癌症的新式武器(5)
The siRNA is deployed first. It acts for hours, giving enough time to silence and block those survival genes. siRNA首先开始行动。它需要几个小时，来让（癌细胞的）生存基因失效。 We have now disabled those genetic superpowe
TED演讲:抗击癌症的新式武器(6)
What's great about this approach is that it can be personalized. 这种方法最大的好处就是可以定制。 We can add many different layers of siRNA to address different mutations and tumor defense mechanisms. 我们可以添加多重siRNA，分
TED演讲:抗击癌症的新式武器(7)
As a researcher, I usually don't get to work with patients. 作为一名研究者，我通常很少与病人接触。 But I recently met a mother who is an ovarian cancer survivor, Mimi, and her daughter, Paige. 但最近我遇到了一位母亲，她叫
TED演讲:从大气中移除二氧化碳的新方法(1)
Four hundred parts per million: that's the approximate concentration of CO2 in the air today. What does this even mean? 百万分之四百：这就是现在空气里二氧化碳大概的浓度。这意味着什么呢？ For every 400 molecules of car
TED演讲:从大气中移除二氧化碳的新方法(2)
So what I'm showing you here is what a system might look like to do just this. 我现在向你们展示的是一个具备这种功能的系统可能的样子。 This is called an air contactor. 它被称为空气接触器。 You can see it has to be
TED演讲:从大气中移除二氧化碳的新方法(3)
And now once you've captured the CO2, 在二氧化碳被捕获之后， you have to be able to recycle that material that you used to capture it, over and over again. 我们还需要能够循环使用用来捕获它的材料，持续不断进行捕获。
TED演讲:从大气中移除二氧化碳的新方法(4)
Now let's talk about costs. 现在让我们谈谈成本问题。 An energy-intensive version of this technology could cost you as much as $1,000 a ton just to capture it. Let's translate that. 如果仅仅为了捕获一吨二氧化碳而选择在该技
TED演讲:从大气中移除二氧化碳的新方法(5)
Switzerland-based Climeworks and US-based Global Thermostat use a different approach. 位于瑞士的Climeworks和位于美国的Global Thermostat使用的则是不同的方法。 They use solid materials for capture. Climeworks uses heat from the ea
TED演讲:从大气中移除二氧化碳的新方法(6)
I want to step back, and I want to bring up the concept of negative emissions again. 我想退一步，再次提出负排放的概念。 Negative emissions require that the CO2 separated be permanently removed from the atmosphere forever, 负排放，需
TED演讲:从大气中移除二氧化碳的新方法(7)
In addition to those kinds of investments, we also need investments in research and development. 除了这些投资，我们还需要人们在研发项目中投资。 So what might that look like? 这意味着什么呢？ In 1966, the US invested abo
TED演讲:从大气中移除二氧化碳的新方法(8)
Now, what would it take in terms of land area to do this, 200 plants? 那么要建造200个工厂，需要多少土地呢？ It turns out that they would take up about half the land area of Vancouver. 事实上，它们将占据温哥华大约一半的
TED演讲:从大气中移除二氧化碳的新方法(9)
But I want us to reflect a little bit again on negative emissions. 但是我想提醒大家再次对负排放进行反思。 Negative emissions should not be considered a silver bullet, 负排放不应该被当作是万全之策， but they may help
TED演讲:男性避孕药会如何起效(1)
When I tell people that I'm trying to develop a contraceptive pill for men, 当我跟别人说我正在尝试研发男性避孕药时， the response usually varies along gender lines. 对方的反应一般取决于性别。 Women say something like,
TED演讲:男性避孕药会如何起效(2)
One approach that's finally becoming a real possibility is better contraceptive options for men. Think about it. 一种即将成为现实的办法是针对男性的更好的避孕措施。想想吧。 We have over a dozen methods of contraception for
