常速英语

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The central dogma of molecular biology, DNA makes RNA makes protein. Here the process begins. Transcription factors assemble at a specific promoter region along the DNA. The length of DNA follow...

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The closest stars to our solar system are about 4.3 light years away from Earth. But how do we know that distance? It seems like measuring a star’s distance should be impossible. It’s not like we ca...

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What you are about to see is DNA's most extraordinary secret. How a simple code is turned into flesh and blood. It begins with a bundle of factors assembling at the start of a gene. A gene is simply a...

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An epic journey lies ahead for this Arctic Tern, a Forty thousand mile flight from its Greenland spring nest to the same patch of rocky Antarctic ground as generations before. The Earth's magnetic fi...

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The cells start off as a female with two X chromosomes. The cell divides and the embryo is getting slightly bigger and still each cell has both X chromosomes active, but in early embryogenesis eac...

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Yeast puffs up bread and ferments beer. But for scientists at Ginkgo Bioworks in Boston, the microbes are taking them back more than a century to resurrect, for the first time ever, the scent ...

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The virus is derived from a typical cold virus, called an adenovirus. It infects, or begins to infect all cells. If the virus infects a normal cell, the DNA from the virus will get out of it and go to...

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When temperatures drop and the days get shorter, many animals wait out winter by hibernating or migrating to warmer climates. But honey bees do something a little different to stay cozy. They hu...