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科学研究   

2022-04-12   Video
What Is Something

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The simple questions are the hardest ones to answer. What is a thing? Why do things happen? And why do they happen the way they do? Let’s try to approach this step-by-step. What are you made of? ...


2022-04-10   Intermediate
The Science of Cheese

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Steve: Tell me about your background—you are a food scientist. Chen: Yes, I am a food scientist; I have a bachelor's degree from the University of Wisconsin–Madison and I've been with the Wisconsin C...


2022-04-10   Video
The String & Paper Centrifuge

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Scientists have used paper and string to make a centrifuge that could be used for medical tests in remote locations. The centrifuge is an important part of science labs across the world. In healt...


2022-04-08   Video
Chargaff's Ratio

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The DNA molecule is made up of very long chains of the four bases. A, C, G, and T. In 1950, Erwin Chargaff published a paper stating that, in DNA of any given species, the ratio of ade...


2022-04-06   Video
What Is Light

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Light, is the connection between us and the universe. Through light, we could experience distant stars and look back at the beginning of existence itself. But, what is light? In a nutshell Light, ...


2022-04-04   Intermediate
The Ethics of Climate Change

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Steve: You have a paper called "Climate Change and Global Health Quantifying a Growing Ethical Crisis". What's the ethical connection to global warming? Patz: Well, certainly we know that the industr...


2022-04-02   Intermediate
The Public Health Threat of Animal Diseases

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Steve: Hey Phil. How are you? Phil: Good Steve. Steve: So you just got back from Europe. Where were you? Phil: I was in Salzburg attending the Salzburg Global Seminar on Animal and Public Health. ...


2022-04-02   Video
Coding Sequences in DNA

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Think of how many letters fit on a single page. And now imagine a stack of pages 300 feet tall. That's how much information is stored in the DNA inside every human cell-- the entire human...


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