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

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

美国科学60秒 SSS 2013-01-18

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

美国科学60秒 SSS 2013-01-02

This is Scientific American 60 second Science, I am Sophie Bushwick, Got a minute? Sharing is one of the hallmarks of human behavior: give me a cookie and Im more likely to give you one later. But our bonobo cousins have an odd variation on the pract

美国科学60秒 SSS 2013-01-03

This is Scientific American 60 second Science, I am Sophie Bushwick, Got a minute? Sharing is one of the hallmarks of human behavior: give me a cookie and Im more likely to give you one later. But our bonobo cousins have an odd variation on the pract

美国科学60秒 SSS 2013-01-07

This is Scientific American 60 second science, I am Christopher Intagliata, got a minute? If you've ever dined with a stuffy nose, you know that what you smell strongly influences what you taste. But what you see matters too. Even the color of a cup

美国科学60秒 SSS 2013-01-09

This is Scientific Americans 60 - Second Science, I am Karen Hopkin, this will just take a minute. After a long bath, your fingers and toes come out all wrinkly. You may have wondered why your skin would go and do such a thing. Now a study shows that

美国科学60秒 SSS 2013-01-11

This is Scientific Americans 60 second Science, I am GretchenKuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

美国科学60秒 SSS 2013-01-29

This is Scientific American 60-second Science,I'm Gretchen Cuda Kroen,got a minute?The last time you splurged on a live lobster for dinner ,you might not have given any thought to how much the little guy was going to suffer as he boiled to death.Unti

美国科学60秒 SSS 2013-01-28

This is Scientific American 60-second Science,I'm Gretchen Cuda Kroen,got a minute?Sharing syringes is a big no-no.Despite the warnings,needles sharing among injection drug users are still a significant cause for the spread of HIV and other infectiou

美国科学60秒 SSS 2013-01-25

This is Scientific American 60-second Science,I'm Sophie Bushwick.Got a minute?Scientists have used synthetic DNA to store digital files,including a photo,Shakespeare's sonnets and an audio recording on Martin Luther King. And the pursuit of happines

美国科学60秒 SSS 2013-01-24

This is Scientific Americans 60 second Science, I am Christopher Intagliata, got a minute. Sailors don't need to read the stars anymorethey've got GPS. But dung beetles do not have GPS. And it now appears that they use the Milky Way as a compass. Dun

美国科学60秒 SSS 2013-01-23

This is Scientific Americans 60 second Science, I am Karen Hopkin, this will just take a minute. Since the first human genome sequence was published, thousands of people have submitted their DNA for scientific analysis. They made these donations anon

美国科学60秒 SSS 2013-01-22

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 Pozzin

美国科学60秒 SSS 2013-01-21

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

美国科学60秒 SSS 2013-01-31

When you think about dog food, you probably picture more meet than potato. But a new study finds that unlike wolves, dog have genes allow them to digest starch. That evolutionary adaptation may help fuel domestication. The report is in the journal na

美国科学60秒 SSS 2013-01-04

This is Scientific Americans 60 second Science, I am Sophie Bushwick, got a minute? Comparisons of different animals have shown that larger brains provide greater intelligence, but they also guzzle more energy and have other consequences. Now scienti

美国科学60秒 SSS 2013-01-16

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

美国科学60秒 SSS 2013-01-14

When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the

美国科学60秒 SSS 2013-01-10

This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as