含中文字幕节目   

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Polymerase chain reaction-- or PCR-- uses repeated cycles of heating and cooling to make many copies of a specific region of DNA. First, the temperature is raised to near boiling, causing the double s...

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Nhiều người muốn lưu lại khoảnh khắc đẹp bên bạn bè và người thân. Sau đây là 10 bí kíp của các nhiếp ảnh gia chuyên nghiệp bạn không thể bỏ lỡ. 1. Làm sạch ống kính. Trước khi chụp một bức ảnh, b...

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“Taxi!” The car stops. A sign on top of it reads ‘Taxi’. A woman asks the driver how much it costs to go to the airport. He tells her and she agrees to the price. She gets in the car. And they leav...

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Opera; Star light, star bright; A meditation on England; In 1572 a new star blazed through the sky. It was a cataclysmic event for scholars, who believed at the time that the universe was unchangin...

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Steve: You are a surgeon and a writer. What's your general background? I know your dad was a doctor too, from reading the book. Gawande: My parents are from India, but I was born and raised here, and...

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So this squid is a nocturnal animal. And so what we've done is we put this poor guy in his water during the day. And he doesn't like it. So he looks kind of uncoordinated, he looks a...

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Imagine you are one of the most-famous movie stars in the world.Millions of people pay to see your films,and everyone seems to know your name.Thirty years later,you are attending a comic book conventi...

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Books and arts. Books review. Ernest Hemingway's Biography. The old man and the sea. Hemingway’s Boat: Everything He Loved in Life, and Lost, 1934-1961. By Paul Hendrickson. Paul Hendrickson bibli...