What and how the Japanese eat, he says,explains why they are the healthiest people on earth.

VOA: standard.2010.02.23

Why should the amount by which you're attracted to the Earth be also a measure of how much you hate acceleration?

为什么物体受地球引力的大小,恰好能衡量物体加速的难易程度呢

耶鲁公开课 - 基础物理课程节选

Can you tell me why I'm sure the Earth has an acceleration?

你能告诉我为什么我确信地球有加速度吗

耶鲁公开课 - 基础物理课程节选

"What we see that because the supply of the gold is depleting, that's why the cost of digging the gold out of the earth is very high."

VOA: standard.2010.07.21