标签：美国科学 相关文章
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
Scientific American(十二)月
This is Scientific American 60 second Science, Im Sophie Bushwick. Got a minute? It was thought that saltwater seas separated Central and South America millions of years ago. But a recent discovery may render that idea all wet. Because archaeologists
Scientific American(三)月
Are you listening to this part cares when you drive, then texting your friends about it? Dont you do that, the texting, I mean. Because a new study shows even a few use of hand free device, sending or receiving a electronic message can prove a major
Scientific American(六)月
Smart phone battery down to ten percent?Time to turn down the brightness on the screen. Right? It's a classic strategy to squize more dues from the battery, and it works. But that trick might be less effetive than you think because it turns out nearl
2015年Scientific American(六)月
Chimpanzees， they are much like us, genetically and atomically, and as it turns out, cocktail logically. Because we finally have solid evidence that chimps drink alcohol.Social researcher who observed while chimpanzees throw back fermented tree tap
2015年Scientific American(六)月
This is scientific American 60 seconds science. I'm *, got a minute ?Genetically engineered bacteria already proves some products are commercial interests or biometical importance such as insulin. And coaxing the organism to do so can be done with a
2015年Scientific American(一)月
This is Scientific American's Sixty-Second-Science, I'm Steve Mirsky, got a minute? We expect guinea worm to be the second disease in the history of the world to be completely eradicated from the face of the Earth. Former President Jimmy Carter, in a
2015年Scientific American(一)月
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
Scientific American(十二)月
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
Scientific American(十二)月
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
Scientific American(十二)月
Crampfish became famous thanks to the movie Finding Nimo. In real life, their social hierarchy is simple, larger fish dominate their smaller counterparts. Now we know that to reinforce the social structure, the fish communicate with aggressive and su
Scientific American(十一)月
This is Scientific Americans 60-Second Science. Im Gretchen Cuda Kroen. Got a minute? Nasty bacteria cling to the surfaces of countertops. They also stick to medical devices - like catheters - that are placed inside the human body, where they can bec
Scientific American(十一)月
Don't forget to move your clocks forward this weekend and then don't forget to be more careful on the days after you adjust your clocks. Because 2009 study found the hour of the lost sleep was related to increase job related injuries. Probably becaus
Scientific American(三)月
Clouds, they are fluffy, white and full of mystery. Although scientist may have better handle on clouds, even they don't know at all. Because the new study can show that atmosphere gases can help clouds form in a way no one had ever considered. That'
Scientific American(二)月
Ordinarily you've called it a pistachio a pistachio, but if you are for example an immigrant from China, and you've just seen a Ming vase. You might call a pistachio and a happy nut. Because visual cues can affect language in people with multiple cul
Scientific American(六)月
You're in the supermarket, picking a breakfast cereal. Will it be cinnamon raisin or oats in honey. Hard to decide? Well, what if I told you they both cost the same, would that make it easier? Well, a new study suggests it would not. Because research
Scientific American(四)月
The drug trade has devastated communities in central and south America. Policy makes are looing at moving away from trying to stop drug production to trying to curb demand. If it works and Nakada producers lose power, central american's forest will b
2014年Scientific American(二)月
Chimpanzees.They are much like us, genetically and atomically, and as it turns out, cocktail logically. Because we finally have solid evidence that chims drink alcohol. So say researchers who observed wild chimpanzees throw back fermented tree sap. T
2015年Scientific American(六)月
Have you ever sworn that you left your phone in the car only to find it in your pocket or on your desk or, admit it, in the fridge. Or maybe you just dreamed that you left it on the dashboard(汽车仪表盘) and the memory was so real, you had to ch
2015年Scientific American(三)月
Early warning systems can be the difference between life and death in earthquake-prone regions. But they are expensive. The US, Mexico and Japan have such systems. That leaves large swats of central and South America, Asia and the Caribbean unprotect
2015年Scientific American(四)月