科学研究   常速英语

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The world we live in feels normal, ordinary. It feels like this is just how humans exist and always existed. But, it's not. Never before have we humans lived in a world as sophisticated and enginee...

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[NARRATOR:] The DNA double helix contains two sequences of nucleotide code letters that run along the molecule. Untwist the spiral, and DNA can be seen as two parallel strands. That'...

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The physics of sneezes is at the heart of understanding how pathogens of one individual become the pathogens of another. So without that step of transportation of the pathogens from one host to th...

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A lot of things can be beautiful. Landscapes, faces, fine art, or epic architecture; stars in the sky. Or simply the reflection of the sun on an empty bottle. Beauty is nothing tangible, it only ex...

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The structure of DNA that Watson and Crick discovered suggests how genetic information is passed on. Before a cell divides the double helix unwinds and the two strands of the DNA molecule in the nucle...

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We know that DNA makes people and plants and puppies. So why not robots? Could it be possible to make tiny robots out of DNA? In 2006 Paul Rothemund found a way to make all sorts of tiny shapes ...

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During DNA replication, both strands of the double helix act as templates for the formation of new DNA molecules. Copying occurs at a localized region called the replication fork, which is a Y shaped ...

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Using computer animation based on molecular research, we are now able to see how DNA is actually copied in living cells. You are looking at an assembly line of amazing miniature biochemical machin...