美国科学60秒 SSS 2012-12-03

In the last decade scientists have managed to sequence the genomes of everything from bacteria and fruit flies to individual human beings. But often overlooked are the genomic sequences of our food. We know the genomes of apples, bananas, potatoes, w

美国科学60秒 SSS 2012-12-04

Mercury tends to show up in strange places, like swordfish and sharks. Now researchers have detected small amounts of mercury in the fog that bathes the California redwoods, near Santa Cruz. The mercury levels they've measured are in parts per trilli

美国科学60秒 SSS 2012-12-05

Cigarettes are bad for your health. But thats only if you smoke em. If you use them to line your nest, they might actually do you some good. Because birds that decorate their digs with discarded cigarette butts are less bothered by parasites. Thats a

美国科学60秒 SSS 2012-12-07

Who was the better artist, a caveman or Leonardo da Vinci? It turns out that early depictions of four-legged animals walking are more accurate in some ways than modern oneseven those crafted by the Renaissance master. The study is in the journal PLoS

美国科学60秒 SSS 2012-12-06

Many of us talk with our hands. But some researchers suspect we may listen with our hands, too. Cognitive scientists had subjects listen to spoken sentences, each in the third person and present tense, such as John walks to work. As they listened, th

美国科学60秒 SSS 2012-12-14

You vote for politicians based on their views, right? That's how it works in theory. But other factors can sway your vote. Like a politician's voice. Because studies show that the deeper the voice, the more electable the candidate. And not just for m

美国科学60秒 SSS 2012-12-13

You vote for politicians based on their views, right? Thats how it works in theory, but other facts can sway your votes like politicians voice. Because a study showed that the deeper the voice, the more electable the candidate. And not just for men,

美国科学60秒 SSS 2012-12-12

What prehistoric genius first discovered how to transform milk into delicious cheese? We may never find out, but we now know that humans were purposefully making cheese as early as 7,500 years ago. The finding is in the journal Nature. To make cheese

美国科学60秒 SSS 2012-12-11

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

美国科学60秒 SSS 2012-12-10

Porcupines sport some 30,000 quills, which easily penetrate fleshand then stay stuck in it. Now, scientists have analyzed the shape of individual quills to discover what makes them so effectiveand how we can harness their power for medical devices. T

美国科学60秒 SSS 2012-12-17

This Scientific Americans podcast is sponsored by audible.com, the number-one online resource for best-selling audio books and more. And now audible.com is offering Scientific American listeners a free audio book of your choice. For details go to aud

美国科学60秒 SSS 2012-12-18

This is a season when becteria sinus infections run rampant, but some people are better able to ward off that malady. And they can be identified by their taste buds, because those of us who can better detect bitter flavors may also be better equipped

美国科学60秒 SSS 2012-12-19

Humpback whales sing most frequently where and when they breed. But researchers have just discovered that whales can sing complex songs even when diving and foraging, when its neither the time nor the place for mating behaviour. The study is publishe

美国科学60秒 SSS 2012-12-26

When I say telecommuting, do you picture yourself easing into the workday in a pair of fuzzy slippers? Well, so does your boss. But the reality is, youre both dreaming. Because a new study shows that folks who work at home at least some of the time,

美国科学60秒 SSS 2012-12-25

The sign to America apart guess is response by audible.com. A little more online resource for access out your books and more, and now audible.com is for sign American listeners free out of your notebook for your choice. For details, go to audible.com

美国科学60秒 SSS 2012-12-24

Every fall, you need a new flu shot. Thats because todays vaccines train your immune system to recognize specific strains of flu, indentified by two proteins on the viruss coat, / and /. Thats where the H and N come from in H1N1. Problem is those pro

美国科学60秒 SSS 2012-12-21

Everyfall, you need a new flu shot. Let's consider these vaccines training ourimmune system, the recognize specific strains of flu. Identifying by two protein on the virus coat, hem agglutinin(血细胞凝集素) and neuraminidases(神经氨酸酶).

美国科学60秒 SSS 2012-12-27

Cases of the flu peak in winter in the U.S., but why? A new study suggests it's not the heat, but huminity. Or lack thereof. Because in temperate regions, the influenza virus fares best when the weather's dry. That's according to work published in th

美国科学60秒 SSS 2012-12-20

This is scientific American 60 seconds science. I'm hop kin. just take a minute. Thinking of eating out over the holidays, while you might consider bring your own plate, because the new study shows the typical dishwashing procedures used by most rest

美国科学60秒 SSS 2012-12-31

Archaeologys taking to the air. Researchers spent a month this summer testing a semi-autonomous unmanned aerial vehiclebasically a semi-autonomous dronehigh in the Andes in Peru. The goal: to scan a colonial town from the 1500s that had been built ov