This is Scientific Americans 60-Second Science. I am Katherine Harmon. It will take just a minute. Jupiter's great red spots, it is one of the most familiar site in our solar system, it is also one of the most mysterious. Because based on most calcul

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美国科学60秒 SSS 2013-01-15

How do you to find 1 kilogram? Easy. It's the exact mass of medal cylinder called the international prototype kilogram. IPK, for short. Kept in controlled conditions in France. But the standard kilogram has gained weight since its creation in 1875. T

发表于:2018-12-24 / 阅读(54) / 评论(0)

Scientific American(一)月

美国科学60秒 SSS 2013-01-17

This is Scientific American 60 second Science, I am Sophie Bushwick. Got a minute? Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. And now archaeologists have turned up some of those ancient medicines, wh

发表于:2018-12-24 / 阅读(53) / 评论(0)

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Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. And now archaeologists have turned up some of those ancient medicines, which were preserved in a shipwreck for close to two millennia. The 2nd-century Pozzi

发表于:2018-12-24 / 阅读(50) / 评论(0)

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This is Scientific American 60 Seconds Science. I'm Elly Wilkeson, got minute? Our homes glow at night. Lightbulbs, TVs and now computers, E-readers, tablets and smart phones expose people to an increasing amount of light after dark. And the color of

发表于:2018-12-24 / 阅读(60) / 评论(0)

Scientific American(十)月

科学美国人60秒 SSS 2013-10-18

This is Scientific Americans 60-second science. I am Karen Hopkin. It will take just a minute. Thanks for the Wifi we can watch TV, play games and check email from the comfort of the couch. And soon we maybe able to repurpose our Wifi signals so we c

发表于:2018-12-24 / 阅读(49) / 评论(0)

Scientific American(十)月

科学美国人60秒 SSS 2013-10-25

Called grass hopper mice have an unusual favorite food. Not grass hopper, no, they really like scorpions. You can see theproblem. But the mice shrug off any scorpion things(stings).And the new study shows how. Researcher injected common house mice of

发表于:2018-12-24 / 阅读(77) / 评论(0)

Scientific American(十)月

科学美国人60秒 SSS 2013-09-17

This is Scientific Americana 60 Seconds Science, I'm Christopher Intagliata, got a minute.The Sahara desert isn't known for its greenery, but there's evidence it was once much lusher than today, dotted with waterfall and lakes, now a study suggests t

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Scientific American(九)月

科学美国人60秒 SSS 2013-09-18

This Scientific American 60 Second Science, I'm Sophie Bushwick, got a minute.Developed countries spend about 3 percent of all their electrical power treating waste water, the juice purified contaminated material so it can be returned safely to the e

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Scientific American(九)月

科学美国人60秒 SSS 2013-09-19

This Scientific Americans 60 Seconds Science. I'm Wit Games, got a minute.A bad infection can make you delirious, but mind clears once germs are gone, usually. Not so when researchers recently injected mice with taxol plasma Ganede, this parasites pr

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Scientific American(九)月

科学美国人60秒 SSS 2013-09-23

Iconic works of art get exhibited worldwide but as these painting's age they can become to fragile to estan travel around the globe.The pink can be visually examined to gage the integrity,but the only way to check the canvas had been to move a piece

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科学美国人60秒 SSS 2013-10-17

This is Scientific American's Sixty Seconds Science. I am K.H., this will just take a minute. Thanks to WiFi, we can watch movies, play games and check email from the comfort of the couch. And soon we may be able to repurpose our WiFi signal so we ca

发表于:2018-12-24 / 阅读(44) / 评论(0)

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