2011年Scientific American's Six

This is Scientific American's 60-Second Science. I'm Amy Kraft. Got a minute? Out of control drivers aren't the only thing city cyclists have to worry about. New research suggests that cyclists are at increased risk of lung damage because of soot. A

发表于:2018-12-24 / 阅读(161) / 评论(0) 分类 Scientific American(九)月

This is Scientific Americans 60-second science, Im Sophie Bushwick. Got a minute? To vocalize, animals create sound waves in the pipeline vocal checks. Shorter pipes produce higher frequency sounds, so smallest animals like the cuddly koala should ha

发表于:2018-12-24 / 阅读(213) / 评论(0) 分类 Scientific American(九)月

Most large animals have to chew food extensively and form it into a mushy ball that's easy to swallow. Cooking makes a huge differenceit softens the food and dramatically reduces eating time. Researchers calculated that if we lived like our non-cooki

发表于:2018-12-24 / 阅读(181) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To be honest with you, I didnt feel a thing. But many other Scientific American staffers felt the shaking a few minutes before 2 P.M. Eastern time. After checking Twitter

发表于:2018-12-24 / 阅读(167) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Rivers today have high muddy banks, sandbars and bends. But they didnt always look that way because it wasnt until the evolution of tree-like plants, some 330 mi

发表于:2018-12-24 / 阅读(202) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-SecondScience. Im John Matson, got a minute? Say you need a diamond. You could go downto the jeweler, or you could put some carbon deep underground and let it sitfor a couple billion years. Or you could hop in a starsh

发表于:2018-12-24 / 阅读(131) / 评论(0) 分类 Scientific American(八)月

This is Scientific Americans 60-SecondScience, Im Christopher Intagliata. Got a minute? Historians have speculated for years thatglobal environmental changes caused some ancient wars to erupt, or evensocieties to collapse. Such connections may still

发表于:2018-12-24 / 阅读(139) / 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. Smart phones can provide music, movie times, bus schedules. They can even make phone calls! And now, they might help cut down fuel use while driving. T

发表于:2018-12-24 / 阅读(132) / 评论(0) 分类 Scientific American(八)月

Male nursery web spiders often woo potential lady-friends with gifts wrapped in silk. Mating may ensue, during which a female unspools the present, expecting to find a tasty treat. But the males can be unscrupulous. Some offerings contain inedible pl

发表于:2018-12-24 / 阅读(147) / 评论(0) 分类 Scientific American(十一)月

Having a high IQ may have its drawbacks: a new study finds that highly intelligent children are more likely to try illegal drugs in their teenage and adult years. The work is published in the Journal of Epidemiology and Community Health. An ongoing s

发表于:2018-12-24 / 阅读(138) / 评论(0) 分类 Scientific American(十一)月

Confessing to a crime usually is not enough to throw you behind bars. Many states require independent evidence to corroborate a confession. But if a suspect confesses and forensic investigators know, it can cause them to favor evidence in support of

发表于:2018-12-24 / 阅读(133) / 评论(0) 分类 Scientific American(十一)月

Here are some Thanksgiving tips from food safety expert Ben Chapman, at North Carolina State University. First, do not wash the turkey. The water splashing off of poultry can toss bacteria around your entire food preparation area. Which is how Aunt S

发表于:2018-12-24 / 阅读(159) / 评论(0) 分类 Scientific American(十一)月

Here is some thanksgiving tips food and safety expert Ben Chatman in North Carolina State University. First, do not wash the turkey, which***. The water splashing off a portroy can toss bacteria around your entire food preparation area. Two, s** is t

发表于:2018-12-24 / 阅读(157) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American, 60-second science. I'm Sophie Bushwick. Got a minute? How many Michael Jackson songs do you think became Number one hits? How tall do you think the Eiffel Tower is? How good is your posture? Believe it or not, how you sit

发表于:2018-12-24 / 阅读(205) / 评论(0) 分类 Scientific American(十一)月

The key to a happymarriage and a happy life in retirement, according to recent study, one answeris sex. Researchers m a national data set called 2004 General Social Surveys. Theyanalyze the responses of 238 married seniors, 65 in older, about happine

发表于:2018-12-24 / 阅读(111) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Many scientists draw their concepts.For example, if we look at the work of somebody like Maxwell or Faradywe know they drew as part of their inventing

发表于:2018-12-24 / 阅读(166) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? How do you know the moon is not made of green cheese? Theoretical physicist Sean Carroll at the ScienceWriters2011 conference in Flagstaff on October 17th. Well, we know

发表于:2018-12-24 / 阅读(140) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? We produce nine billion food animals in the United States every year. And most of these animals are fed antibiotics throughout their life. And it's the single greatest u

发表于:2018-12-24 / 阅读(141) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The human genome was sequenced, and in the process of moving that forward the technology that was developed was incredible. And because of their efforts in human genome,

发表于:2018-12-24 / 阅读(242) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? With the loss of these one, two, maybe 10 million bat individuals in these populations, what are the implications? Bats in the U.S. are being plagued by a fungal conditi

发表于:2018-12-24 / 阅读(184) / 评论(0) 分类 Scientific American(十)月
学英语单词
a good example is the best sermon
Ace Group
adjudg(e)ment
affidavit of document
Aguimes
attemptate
Aydιn
Bazna
beacon acquisition time
beam warping sizing
biological zero point
Bizerte, Bizerta
cab rank rule
capillary constant correction
copolymerise
counter-transference
deputary
Devonport
dilivery of luggages and parcels
double lesson
doubleganger
dumping angle
dweebettes
Dysophylla linearis
ecstasied
electronic configuration
electronic stethoscope
floating point mode
gas outlet hole
glyceryl stearate
GM_punctuation
goldpiece
Goslee teeth
grass-bleached
green coke
HBAA
high tension test pencil
hinge-type faulting
hot capital movement
hovering over the tanks
hymnographers
hypertrophy of prostate
importrestriction
information feedback control loop
isoamoxy
jdsu
Kuajok
latchesse
light industrial paint
managment
mendation
Merib-baal
micro-saccharimeter
mineralized zone
Moqui
naptimes
nickel talc
Pergam, Pulau
Persicaria praetermissa
pest-insect survey
phonematization
pinetree structure
plays the fool
pocket pistols
posterior tibial recurrent artery
prosternal episternum
quasi-distance
reduced group
reserve required by the articles
righetti
Rosa roxburghii
Rumchék
sand flow
sangiaco
scale of feet
shim bolt
slipperishness
slk
superconductivity bolometer
SURVEX
sweet lovin'
syndactyle
Tabalo
tear testing
tendinitis achillea
thiacetate
thiopeptide
thoracic spondylosis
three-strikes
threshold amplifier
typical grading
Urobotrya latisquama
Velp
voltage current transducer
volumic donor number
Wanie-Rukula
wheat blossom midge
wildwoman
wire-rolling mill
yes and no
zakula
Zimām, Wādī