2010年Scientific American's Six

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Whaddya get when you cross a planet with a comet? Well, HD 209458b looks like a candidate. Its a gas giant planet also called Osiris, and its orbiting so close to its st

发表于:2019-01-08 / 阅读(173) / 评论(0) 分类 Scientific American(七)月

New York Yankees pitcher Andy Pettitte had to leave Sundays game against Tampa in the third inning because of a strained groin. He thus slightly beat the odds. Because his injury happened after the All-Star Game, which was last Tuesday. And a new stu

发表于:2019-01-08 / 阅读(227) / 评论(0) 分类 Scientific American(七)月

A couple of studies on perception. First, theres now visual data to back up the idea that everything looks kinda gray when you feel blue. Researchers examined how the retina responds to different black-and-white contrast situations. They did the test

发表于:2019-01-08 / 阅读(192) / 评论(0) 分类 Scientific American(七)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will take just a minute. As many of us broil in August heat, the Mars Rover Spirit is hunkered down to survive a far more brutal seasona Martian winter. Spirits been on Mars sinc

发表于:2019-01-08 / 阅读(209) / 评论(0) 分类 Scientific American(八)月

Why arent there more women physicists, and in senior positions? One factor may be unconscious biases that could keep women physicists from advancingand may even prevent women from going into physics in the first place. Amy Bug, a physicist at Swarthm

发表于:2019-01-08 / 阅读(180) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-Second Science. Im Adam Hinterthuer. Got a minute? Heres a possible blood pressure remedy. But its only for those who can stand the heat. Its capsaicin, the active ingredient in peppers like habaneros that should pro

发表于:2019-01-08 / 阅读(237) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute Declining frog populations are considered an indicator of environmental damage. But new research finds that frogs might be doing even worse than we thou

发表于:2019-01-08 / 阅读(155) / 评论(0) 分类 Scientific American(八)月

One of the concerns about working with genetically modified crops has been that vegetation growing in agricultural fields might escape out into the world. Now, for the first time in the U.S., researchers report a large population of GM crops beyond t

发表于:2019-01-08 / 阅读(193) / 评论(0) 分类 Scientific American(八)月

Blue whales off the California coast make calls that, sped up 10 times, sound like (sound of two-part call). The original is a wall-rattling frequency too low for us to hear. Scientists analyzed around 2,500 of those calls, and found that the second

发表于:2019-01-08 / 阅读(164) / 评论(0) 分类 Scientific American(八)月

Thats what it might sound like if I had a tongue stud, hitting my teeth. Maybe youve seen people with studs in their tongue clicking it up against their front teeth, a move known as playing. But it turns out that the habit may destroy some smiles. Un

发表于:2019-01-08 / 阅读(243) / 评论(0) 分类 Scientific American(八)月

Theres nothing like a good steak. And our Australopithecus afarensis ancestors apparently felt the same way. Because new discoveries from Ethiopia show that what was likely the species of the famous fossil Lucy used stone tools to butcher meat from b

发表于:2019-01-08 / 阅读(170) / 评论(0) 分类 Scientific American(八)月

Doctors like to think that theyll turn in colleagues who are doing a particularly bad job. But its not so straightforward when physicians are faced with such a colleague, according to a study published in the Journal of the American Medical Associati

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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. 'Tis the season when many of us go on a seafood diet: we see food and we eat it. But if you want to avoid packing on the pounds, a new study suggests tha

发表于:2019-01-08 / 阅读(212) / 评论(0) 分类 Scientific American(十二)月

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Galileo first spotted Saturn's rings 400 years ago. But since then, scientists have been stumped about how they got there. Because the rings are almost pure wa

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That 80s power ballad had it all wrong. Love may keep you from hurting. Two researcherspain specialist Sean Mackey at Stanford and love specialist Arthur Aron at S.U.N.Y. Stony Brookmet at a neuroscience conference. They realized they were talking ab

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Many of our medicines originate in plants. But were not the only ones who tap into nature.Theres increasing evidence that some animals seek out specific plants for their medicinal qualities. A new study shows that monarch butterflies may be among the

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A noisy restaurant can distract you from your dinner conversation. But all that clatter may also drown out the taste of your food, making it more bland. That's according to a study in the journal Food Quality and Preference. Researchers recruited 48

发表于:2019-01-08 / 阅读(207) / 评论(0) 分类 Scientific American(十)月

We tend to think of cavemen as pretty serious carnivores, hunting game and then roasting the yummy bits over a roaring campfire. But scientists just reported discovering traces of starch on some ancient stone tools. Which suggests that there were pro

发表于:2019-01-08 / 阅读(218) / 评论(0) 分类 Scientific American(十)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. If youre like me, you get a jolt of energy from socializing, and hanging out with large groups of friends, because were extroverts. But if were too socia

发表于:2019-01-08 / 阅读(199) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Toss a piece of leaf onto a spider web. The spider is indifferent. Because leaves don't squirm like captured flies. But Australia's assassin bug turns the tabl

发表于:2019-01-08 / 阅读(308) / 评论(0) 分类 Scientific American(十一)月
学英语单词
a doorstop
A pox on yon !
Ammobium alatum
ayandele
bouillon spoon
centring cam
Chrysosplenium uniflorum
clarifying filter
Cohocton
compel
counterdrawing
curvographs
cybernated society
danshenxinkun
daragon
delay in delivery
derivatizing reaction vial
desolatingly
direct admission
draining of pipeline
Driewegen
electro-pupillography
emergency boration
Esbach's tests
extra contour
farmless
foil carrying pliers
football-field
glomangiomas
gravekeepers
hemosensitin
horse-sickness
hound shark
huminitic
ignition magneto
it's not over until the fat lady sings
junk sail
keep-alive discharge
kunle
lagarangian correlation
link arm
Lébiri
macul-
magnetic locator
manufacturers rep
maximum compression axis
merit system
metal lustre
Molyneux balance wheel
moreand
Myeik Kyunzu
non-judicial matters
nonprincipal ultrafilter
norgestrel
O.B.E.
o.s.s
objects
ocean station
oleic acid
Ossipee
owner-ship
pack screen
paprika
phytolaccanine
pickwell
plate basket
play heck with
preserve from
press polish
pressed bale
pressure suppression
proparoxytones
pucture
quantity not sufficient
raise a new issue
retirement community
robalos
rogett
sanity-check
satin twill
screenability
sd disk
self sharpening share
Shutargardan P.
sound survey meter
story grate
swerve from
telecentric beam
tetralonioidella himalayana formosana
time reference systems
tractus pinealis
twin-sized
unconstraints
unit drill
vicaries
vice-presidential
water proof plug
water service system
white washing
whoopee cushion
winch capacity
Zanthoxylum liboense