Hi, everybody. This Monday, I'm heading to Alaska for a three-day tour of the state. I've been looking forward to this for a long time. Not only because Alaska is one of the most beautiful pla
Thousands of people are posting videos like this,mostly teenage girls, reaching out in this way. 有成千上万的人们上传这样的视频，他们中大部分都是十几岁的女孩，用这种方式来接触外界。 But what's leading them to do this? 然而是什么导致他们这样做的呢？ Well
So remember, I said 4D. So today for the first time, we're unveiling a new project, which is a collaboration with Stratasys, and it's called 4D printing. 还记得我刚才提到了四维，今天我们首次向大家展示一个新项目，这是和Stratasys公司一同合
How much? Enough to get us to the Global Goals? 我们要取得多少进步来到达全球目标呢？ Well, let's look at some numbers. 咱们来看看这些数字。 What we know already: the world today is scoring 61 on social progress, and the place we
