常速英语

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The malaria parasite is an ancient organism. It has been with us since before we were human. Famous victims include Alexander the Great Genghis Khan and George, Washington. The malaria lifecy...

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Microbes are everywhere, on your phone, in your water bottle, on your hands before you wash them, on your hands after you wash them, and literally everywhere else on top of you too. ...

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[NARRATOR:] Mosquitoes are usually vegetarian, preferring to drink nectar, fruit juices, and honeydew. Only a pregnant mosquito will bite humans, seeking nutrients from blood to nourish he...

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Machine learning is the process by which computer programs grow from experience. This isn’t science fiction, where robots advance until they take over the world. When we talk about machine learn...

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SEAN CARROLL: For tens of thousands of years, much of North America lay buried under ice up to a mile thick. Then the massive ice sheets receded. In what is now Alaska, ocean bound stream...

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We humans are unable to experience the true nature of the universe, unfiltered. Our senses and brains can only process a fraction of the world. So we have to use concepts and tools, to learn...

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So the basic concept is that heat inside the Earth drives motions. We have convection currents, through which heat is dissipated from the interior of the Earth. Those convection current...

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You’re surrounded by it. You can’t send an e-mail without touching it. You can’t watch your favorite streaming series without welcoming it into your home. You don’t know where you’re going, but it’...