And in doing so, we were breeding them for parasitism. 为了做到这点，人类用喂养的方式来让它们寄生于我们。 We were giving them all sorts of reasons to adapt new ways. 我们给了动物们适应新环境的各种理由。 So, for example, rats are incredibly res

REMARKS BY PRESIDENT OBAMA AND PRESIDENT NAPOLITANO OF ITALY AFTER BILATERAL MEETING PRESIDENT NAPOLITANO: (As translated.) Good morning. President Obama will leave shortly, so this will be a very sho

President's Radio Address THE PRESIDENT: Good morning. Over the past few days, we have witnessed a startling drop in the stock market -- much of it driven by uncertainty and fear. Many Americans have

What about sleep? In slow-wave deep sleep, our glial cells rinse cerebral spinal fluid throughout our brains, 关于睡眠呢？在慢波深度睡眠时，我们的神经胶质细胞冲洗着我们大脑中的脑脊液， clearing away metabolic waste that accumulated in ou

Rosh Hashanah marks the start of a new year. It is a time of redemption and renewal, and hope for a new beginning. I am delighted to join Jewish communities across Canada and around the world in celeb