科学研究   

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Can we roll the video here? This video tape scans across what the BMI would be for a 5'10" individual, a male, at a different weight. So this man has a BMI of 24 he's 5'10", 167lbs. He ...

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Mechanisms of evolution. What is evolution? Evolution is the development of life on Earth. This is a process that began billions of years ago and is still continuing to this day. Evolution...

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And Francis (Crick) is known for his discovery, along with Jim Watson, of the structure of DNA. And he would occasionally indulge in a double bacon cheeseburger from Jack in the Box. A...

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Science and Technology. Mental well-being. A New York state of mind. Urban brains behave differently from rural ones. “HELL is a city much like London,” opined Percy Bysshe Shelley in 1819. Moder...

科学和技术 心理健康 纽约人的精神状态 城市人的大脑异于乡村 1819年，波比·雪莱认为“伦敦市更像一个地狱”。现代学者同意这个观点。荷兰研究人员研究表明，城市居民相对稳定的乡村同胞来说，得焦虑症的概率高出21%，得心理障...

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Steve: Dr. Wells, great to talk to you. Wells: Thanks Steve. It's great to be here. Steve: And here is Central Park. Why don't we spend just a minute talking about Central Park and its role in the w...

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The beginning of everything. The Big Bang. The idea that the universe was suddenly born and is not infinite. Up to the middle of the 20th century, most scientists thought of the universe ...

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Steve: Hi to both of you. Weber: Hi, Steve. Binford: Hi, Steve. Thanks for having us. Weber: Thank you. Steve: Sure, good to talk about. We're going to talk about spiders, which are really...

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Life is fundamentally different from dead stuff—or is it? Physicist Erwin Schrödinger defined life this way: Living things avoid decay into disorder and equilibrium. What does this mean? ...