So for any of us in this room today, 今天在座的各位， let's start out by admitting we're lucky. 我们先承认我们是幸运的。 We don't live in the world 我们没有生活在 our mothers lived in, our grandmothers lived in, 我们母
So one thing that I do agree with, and I think most experts would, is that the brain does have these dynamics. 其中一点我个人是同意的，我相信绝大多数专家也同意，那就是脑部确实有这样的动态。 It does lag behind the skull and then catch up an
From the deserts of North Africa to the islands of the South Pacific one third of all mankind has entered upon an historic struggle for a new freedom; freedom from grinding poverty. 从北非的沙漠到南太平洋的岛屿，全人类
66 million years ago, a much larger object hit the Earth, causing a massive extinction. 六百六十万年前，一个更大的物体撞击地球，造成了物种大灭绝。 75 percent of plant and animal species were lost, including, sadly, the dinosaurs.
