2010年Scientific American's Six

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. Want to feed a hungry world? According to David Gracer, add bugs to the menu. Gracer is, he says, a normal guy whos also an entomophagist, an advocate fo

发表于:2018-12-24 / 阅读(96) / 评论(0) 分类 Scientific American(五)月

For astronomers who study the large-scale structure of the universe, dwarf galaxies have proven quite vexing. Because the leading model of cosmology has been unable to account for their relative lack of substance. Now scientists writing in the journa

发表于:2018-12-24 / 阅读(94) / 评论(0) 分类 Scientific American(一)月

Your feet may love running shoes. But what about the rest of your body? New research finds that running shoes actually increase the pressure on ankles, knees and hipsmore than high heels can during walking. Thats according to a study in the Journal o

发表于:2018-12-24 / 阅读(96) / 评论(0) 分类 Scientific American(一)月

Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c

发表于:2018-12-24 / 阅读(106) / 评论(0) 分类 Scientific American(一)月

You know how grandma's always criticizing your new haircut or choice of clothing? Well, it might not hurt to listen. Because old folks who can't hold their tongues may give the best advice. Thats according to a study in the Journal of Experimental So

发表于:2018-12-24 / 阅读(73) / 评论(0) 分类 Scientific American(九)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? Baseball players sometimes cheat! One popular method has been to cork the bat. You drill out some of the core of the bat, and replace the heavy wood with light cork. You

发表于:2018-12-24 / 阅读(80) / 评论(0) 分类 Scientific American(九)月

This is Scientific Americans 60-Second Science, Im Cynthia Graber. Thisll just take a minute. Songbirds sing to entice mates, and the timing of those songs is often regulated by sunlight. But that timing is getting thrown offby streetlamps. Thats acc

发表于:2018-12-24 / 阅读(77) / 评论(0) 分类 Scientific American(九)月

Invasive species can decrease biodiversity and drive resident species to the brink of extinction. But how do these interlopers fare so well in unfamiliar territory? One idea is that theyve escaped their enemies, for example, the parasites that keep t

发表于:2018-12-24 / 阅读(115) / 评论(0) 分类 Scientific American(四)月

Last week, scientists announced the discovery of a remarkably well-preserved skeleton of what might be a new species of an ancient hominid that lived almost 2 million years ago. The bones were found in 2008. This February, they were analyzed by one o

发表于:2018-12-24 / 阅读(97) / 评论(0) 分类 Scientific American(四)月

They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba

发表于:2018-12-24 / 阅读(89) / 评论(0) 分类 Scientific American(三)月

The American Museum of Natural Historys Hayden Planetarium hosted a discussion of the future of manned space flight on March 15th. Retired Air Force General Lester Lyles was asked about the militarys interest in space: Its the high ground. Its the ul

发表于:2018-12-24 / 阅读(108) / 评论(0) 分类 Scientific American(三)月

Humans are pegged to a 24-hour cycle. We're locked into it not just by day and nighttheres the master timepiece in the brain called the circadian clock. But it doesn't make sense to live by a 24-hour clock in the Arctic, where it's dark or light for

发表于:2018-12-24 / 阅读(88) / 评论(0) 分类 Scientific American(三)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? Look at a map and you can tell right away where New York ends and New Jersey begins. But that official border is not a true reflection of how the community is really sha

发表于:2018-12-24 / 阅读(70) / 评论(0) 分类 Scientific American(十一)月

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Astronomers have already discovered hundreds of exoplanets. But make way for the new kid, which is orbiting a kind of star that models say it shouldnt. Researche

发表于:2018-12-24 / 阅读(95) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm Molly Webster. Got a minute? Everyone from Freud to Tina Fey has tried to understand why some things are funny. Now, new research concludes that one key to comedy is for a situation to violate a mo

发表于:2018-12-24 / 阅读(79) / 评论(0) 分类 Scientific American(八)月

Youve probably seen dogs working security at airports, sniffing for drugs, bombs and contraband food. Now our best-friend biosensors might have a new task: ferretting out the scent of bird flu. And they may not be alone on the job. Researchers from t

发表于:2018-12-24 / 阅读(80) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-Second Science, Im Karen Hopkin. This will just take a minute. Gimme the chocolate milkshake and the cheeseburger deluxe. Thats the cheeseburger with lettuce, tomato, onion, fries and statin pill, coming right up. That

发表于:2018-12-24 / 阅读(69) / 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. Are you listening to me through headphones? Because heres a sample of what might be harming the ears of teenagers. Just kiddingthe last thing we want t

发表于:2018-12-24 / 阅读(72) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Engineers are always plugging away to get better energy efficiency out of our products -- like cars that guzzle less gas or light bulbs that burn brighter on f

发表于:2018-12-24 / 阅读(99) / 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. We humans love excuses to gather for a rousing evening of communityfeaturing lots of food. Now researchers have evidence for the earliest known group f

发表于:2018-12-24 / 阅读(80) / 评论(0) 分类 Scientific American(八)月
学英语单词
abundant capital
active silica
algorist
algorithmic convergence
analytic percent
annualized
asphaltic rock
bacterioidal
ballader
basketball coach
baza(a)r
boozles
bop cap
borishanskiite
bremser
Caribou County
cascade mts.
Cathaysoid
Chen Shigong
choicelessness
circuit switching concentration
Clean-up Hitter
complementary random number
corpus wolffi
crustliker
dealie
degree of relation
derived measurement
diplopterygium laevissimum
dml.
double monastery
Downing, Andrew Jackson
eccentricity tolerance
Eleocharis dulcis Trin. ex Henschel
equational language
erythrocyto-opsonin
Evans'index
exudative pericarditis
flatter with
fluxed sinter
forty-eight
four - h club
freight
gazz
Glencapel
Grosssteinherg
gyroquadrilaterals
H-RASGG
high-velocity armor-piercing rocket (hvap)
himalayan orogeny
homologous alternation of generations
horseshoe dune
hymenal
hyperfrequency wave
ibn-arabi
ice-falls
integer programming (IP)
interferometer measurement
Keep upright
Khvoyna
kife
lime-calcination reactor
magnetizing exciter
marsdekosideD
megacollections
mounting torque
Myaceae
net rate of heating
nuka
Paola Caliari
Peronedysidae
piano lid
plicative
prison'
pull sth on
radioisotope suit
range marker generator
recording balloon
recriminator
reproductives
Rhododendron pubescens
Rhynchostegiella
river rat
rjas
Salix microphyta
semi-infinite tape
semi-real-time processing
semisatisfied
sleyman
sodium caprylate
stagolee
start-stop characteristics
static characteristic of governing system
truck transit mixer
true type
unbecomely
very moment
vest-pocket edition
vestibular bulbar vein
viability of seeds
vitalistic
xir