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(155) / 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(191) / 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(164) / 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(187) / 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(163) / 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(208) / 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(141) / 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(160) / 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(144) / 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(218) / 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(146) / 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

发表于:2019-01-08 / 阅读(129) / 评论(0) 分类 Scientific American(七)月

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(196) / 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

发表于:2019-01-08 / 阅读(208) / 评论(0) 分类 Scientific American(十二)月

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

发表于:2019-01-08 / 阅读(176) / 评论(0) 分类 Scientific American(十)月

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

发表于:2019-01-08 / 阅读(153) / 评论(0) 分类 Scientific American(十)月

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(191) / 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(193) / 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(182) / 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(291) / 评论(0) 分类 Scientific American(十一)月
学英语单词
Abbey Theatre
account day's loan
alternate motion
amount guaranteed
anodon
automatic colour circuitry
be descriptive of...
Boletales
bowtie pasta
breakoffs
cam system
cap board
container managed transactions
continental shelf break
cyclohexyl isocyanate
deep-fat fryer
dermographisms
drops the ball
Dzelentsy
electron-induced desorption
eocardiids
external fan kiln
fixed roentgen-ray apparatus
flitch(ed) beam
Ganja(h)
General Public License
get crunk
gluttonously
Grabouw
Grenada Basin
Halaka
heat-exchange capacity
heliograms
Helmholz resonator
hew to
highway-capacity expansion
Huksan-jedo
hurling pump
hydrodynamic wave
hyperdeduction
inclinations of an orbit
interference near-field pattern
isostearate
jet strip system
kira kira
leuctras
liability composition
live part
loading of tire
low pressure direct current plasma
Majhgaon
mesonic chemistry
Microsoft Transaction Server
neap low water
nerve root
omphaloskeptic
overall performane
pageae
Palatinate
palimna formosana
persuasive ability
phylachora phalaridis orton
Piobert lines
pneumonites
pointed tail
powder mix
pure differential
push pawl
push-button selector
RADAS (random access discrete addressing system)
radiofluorine
rarenesses
S register
Sachs
safety element
secret fixing
security intelligences
shindys
shot speed
simply supported
split the ticket
super-region
symbolic image
synchronousness
syphilimetry
thermal electric couple
thujopses
traditional owner
transverse dune
traveled distance
two-state control
Uhuru catalogue
uncivilized
unrejoinable
usucaption
vapoured
venae lumbales
viced
visual simulator
wait till the tide turns
Your mileage may vary.