Scientific American's Sixty

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. They say that love is blind. And that's probably for the best. Because a new study shows that people who greatly idealize their spouses have the happiest

发表于:2019-01-08 / 阅读(207) / 评论(0) 分类 未知分类

Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. If youve ever wondered where the Earth came from, the answer, it seems, is blowin in the windthe solar wind. Or so say scientists who, after examining sola

发表于:2019-01-08 / 阅读(94) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science.I'm Cynthia Graber . This will just take a minute. (Chirping sound.) That may not sound likemuchbut its the loudest animal in the world. For its size, that is. Theinsect called the water boatman is two m

发表于:2019-01-08 / 阅读(96) / 评论(0) 分类 未知分类

Cameras were once big and bulky. Today,really good cameras fit in your pocket. And now, researchers at Cornell havedeveloped a camera thats just a half-millimeter on each side and a hundredthof a millimeter thick. The lens-less device is called a Pla

发表于:2019-01-08 / 阅读(91) / 评论(0) 分类 未知分类

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? You've heard of tennis elbow. Well, a friend of mine has gamekeeper's thumb. When he told me his diagnosis, it rang a bell. So I went through the Scientific American arc

发表于:2019-01-08 / 阅读(94) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Obesity is associated with a host of health problems. But a new study finds that obese people may actually have an advantage in a specific medical situation: theyre less l

发表于:2019-01-08 / 阅读(83) / 评论(0) 分类 未知分类

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? You could think of it as the real dancing with the stars. Two white dwarf stars have been found twirling around each other to make a complete orbit in less than every 13

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Former major league pitcher Antonio Alfonseca had six fingers on each hand. One of his coaches was once asked about the consequences of Alfonseca having six fingers and re

发表于:2019-01-08 / 阅读(90) / 评论(0) 分类 未知分类

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? At the recent Lindau Nobel Laureate Meeting, 2009 chemistry laureate Thomas Steitz recalled that at one institution in the 60s, he saw how informal scientific collaborat

发表于:2019-01-08 / 阅读(129) / 评论(0) 分类 未知分类

Plants are sitting ducks for every hungry herbivore that wanders past. But for some greens, a little grazing is the best thing that can happen. They grow back faster and fuller and make more seeds than they would have if left alone. Now scientists kn

发表于:2019-01-08 / 阅读(71) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a minute? The carbon molecule known as a buckyball, a member of the fullerene family, can act as a cage for a variety of other chemicals. And now researchers have used one to tra

发表于:2019-01-08 / 阅读(54) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Its tough to beat watching a spaceship lift off. But for us audio fans, theres another sequence during launch preparation thats awfully compelling. At 12:18 P.M. Eastern t

发表于:2019-01-08 / 阅读(129) / 评论(0) 分类 未知分类

Invasive species get a bad rapbut we humans are usually to blame for their spread. Take Japanese stiltgrass, an invasive that arrived from Asia nearly 100 years ago as a packing material for porcelain. When it creeps into forests, it forms dense carp

发表于:2019-01-08 / 阅读(68) / 评论(0) 分类 未知分类

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(102) / 评论(0) 分类 未知分类

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Conventional poultry farms use antibiotics extensively, which contributes to the rise of antibiotic-resistant pathogens. But farms that turn to organic

发表于:2019-01-08 / 阅读(54) / 评论(0) 分类 未知分类

This is Scientific American's 60-Second Science. I'm Katherine Harmon. Got a minute? Some 50 million Americans 65 and older currently get help from Medicare. But the program doesn't cover all of the patient's medications. After a patient's annual dru

发表于:2019-01-08 / 阅读(68) / 评论(0) 分类 未知分类

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? When a healthy rat smells a cat, it flees. But rats infected with the Toxoplasma brain parasite actually follow cat odors, often presumably to their doom, red in tooth a

发表于:2019-01-08 / 阅读(112) / 评论(0) 分类 未知分类

This is Scientific Americans 60-SecondScience. Im Steve Mirsky. Got a minute? The traveling salesman problem is afavorite math conundrum: if a salesman has to visit a bunch of cities, how doyou get him to all of them once via the shortest possible ro

发表于:2019-01-08 / 阅读(110) / 评论(0) 分类 未知分类

Some graduate students in science, technology, engineering and mathor STEMonly do research, under the guidance of a mentor. Other STEM grad students also have teaching responsibilities, for example, instructing undergrads or local high schoolers. Now

发表于:2019-01-08 / 阅读(65) / 评论(0) 分类 未知分类
学英语单词
-ci-
accumulated earnings tax
adjustable luminaire
alkanisation
aspides
belt driven centrifugal
beltline
Besskorbnaya
box celler
brand clause
bucket arm pivot
bulbar fillet
Calobryum
Canalis analis
care-fully
cassiterotantalite(ixiolite)
central location test
chrome powder
circulars
Cladrastis parvifolia
colour constancies
compact difference scheme
crossed polorizer
crushing rolls
cutting stylus
defect sizing
diethyl glycine
digital data output conversion equipment
Digitaria ciliaris
discordant fold
dodge under
dornin
down-to-earth
drop-feed oiler
DSMG (designated system management group)
error return-information
erwiniocin
exhaust blanking plate
extreme high frequecy
eye catching
Ferrotriplite
fixed action pattern
flumist
from the fact that
gettas
global test
gosbanks
green-chili
have a bear by the tail
heavenized
held a candle to
heparinic
hypervolia
hysterrhaphy
intercommunication plug switchboard
keep a slack rein on something
Knipovich Ridge
kpcc
light clothing
lorentz reciprocal theorem
Lyapunov direct method
Matriouene
membrane-forming agent
metics
mini-movie
miraflores
multi rack
neo-traditional
neski
OEBPS
overroasting
partial safety factors
passable conduit
primary keys
recoil piston rod
retractable jacking wheel
roadless
rubrocuneocoris maculosus
sanulcin
sapotinetin
sepawns
severely restricted
sex-exclusive
sirles
sledge mill
slit pore
smash-and-grab
Spinks
State Reports
tea fermentation apparatus
tenor guitarist
theissen
Thioryl
tooled
Triclinoerinite
Tsushima Current
uniflora
unstylistic
unwired network
vacum-junction
viatecture
watch ... back