TED演讲:什么是疼痛(1)
Let's say that it would take you ten minutes to solve this puzzle. 假如你要用十分钟完成这个拼图。 How long would it take if you received constant electric shocks to your hands? 如果你的手被持续电击，你会用多久完成它？
TED演讲:什么是疼痛(2)
But modulation networks are also activated that deliver endorphins and enkephalins, 不过调制网络也被唤醒，去传递安多芬和脑啡肽， chemicals released when you're in pain or during extreme exercise, creating the runner's high. 这些
TED演讲:我们为何哭泣(1)
Our story is about a girl named Iris. 我们的故事是关于虹膜女孩的。 Iris is very sensitive. So much that she is always in tears. 虹膜很敏感，以至于总是以泪洗面。 She cries when she's sad, when she's happy, and even tears
TED演讲:我们为何哭泣(2)
The gas stings Iris, and suddenly, she can't help it, she starts weeping uncontrollably. 这种气体刺激着虹膜，来势汹汹，她无力阻止，于是她开始控制不住地大哭。 These reflex tears are different from the basal tears that
TED演讲:周二是什么颜色的?探索联觉(1)
Imagine a world in which you see numbers and letters as colored even though they're printed in black, 想像这样一个世界，你从中看到的数字和字母是彩色的，尽管它们是用黑色写下的， in which music or voices trigger a s
TED演讲:周二是什么颜色的?探索联觉(2)
Once established in childhood, pairings remain fixed for life. 一旦在儿时建立了联系，关联感觉间的联系就会伴随终身。 Synesthetes inherit a biological propensity for hyperconnecting brain neurons, 联觉者遗传了在大脑神经
TED演讲:引力与人体(1)
Some of the issues that are important if you want to have people in space for long periods of time. 如果人类想长期置身太空，有几个重要的问题不得不考虑。 One is that people will tend to lose bone and muscle mass. 其中之一就
TED演讲:引力与人体(2)
You know, all life developed here on Earth with gravity being present, 你知道，地球上的生物在重力环境下生存， so life evolved under the influence of gravity, and then we grow up with gravity being present, 你知道，地球上的生
TED演讲:人在电梯里会变轻吗(1)
You step into an elevator. It starts going down fast. 你进了电梯。电梯开始快速下降。 What would happen if you jumped right when it started going down? 此时，如果你突然往上跳会发生什么事？ Would the ceiling hit your he
TED演讲:人在电梯里会变轻吗(2)
At first, the elevator is standing still, so you and the scale are standing still. 一开始，电梯静止不动，你和体重计一样静止不动。 The two forces on you are equal and opposite. 你身上的作用力相等且相反。 You can rea
TED演讲:一就是一吗(1)
Which is correct: A dozen eggs is? Or A dozen eggs are? 哪个是正确的：a dozen eggs 'is' 还是 a dozen eggs 'are'？ I remember being in elementary school, and my teachers making a big deal about the unit. 我记得上小学的时候，我们老
TED演讲:一就是一吗(2)
The important thing about units is that once we've made a new unit, we can treat it just like we did the old unit. 重要的是，一旦我们创造了新的单位，就能用旧单位那样的方法使用它。 We can compose composed units, and we
TED演讲:记忆是怎么形成和消失的(1)
Think back to a really vivid memory. 回想一个生动的回忆。 Got it? Okay, now try to remember what you had for lunch three weeks ago. 想起来了吗？好的，现在想想你三周前午餐吃了什么。 That second memory probably isn't a
TED演讲:记忆是怎么形成和消失的(2)
Another leading cause of memory problems is chronic stress. 另一个引发记忆力问题的原因是长期压力。 When we're constantly overloaded with work and personal responsibilities, our bodies are on hyper-alert. 当我们长期面对超负荷
TED演讲:我们为什么做梦(1)
In the third millenium BCE, Mesopotamian kings recorded and interpreted their dreams on wax tablets. 公元前三千年，美索不达米亚国王在蜡质石板上记录并解释了他们的梦。 A thousand years later, Ancient Egyptians wrote a dr
