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(127) / 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(163) / 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(149) / 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(130) / 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(160) / 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(103) / 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(115) / 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(103) / 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(116) / 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(111) / 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(110) / 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(129) / 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(130) / 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(162) / 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(82) / 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(141) / 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(110) / 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(105) / 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(198) / 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(140) / 评论(0) 分类 Scientific American(十)月
学英语单词
acidimetry
alto piquiri
angularperspective
arisaema robustum nakai
AS.A.S.
be soaked to the bone
beam tetrode
beauty.com
bebungs
Berwick, Berwickshire
blitzkrieging
Burg auf Fehmam
cast copper alloy for propeller
catabolic repression
cayagzi (iriva)
chestertons
cicatrizing enterocolitis
colon-typhoid-dysentery group
common-wart virus
communites
compasse
complex in involution
compound stomach
compounding extruder
cursilo, cursillo
Curtin
curvas
cussingly
decayed stable manure
draughtmen
end sheathing diagonal stay
excisability
export income
facies visceralis
flying laboratory
food processing equipment
Goody random model
grinding wheel spindle sleeve
have a mental note
high sand content production
Hollenstedt
hooned
hourly quota of handling
house-hold sector
imparipinnate
income summary account
instinctive drift
interest rate swap futures
Isny im Allgäu
Jack-the-lad
jima
jobfinders
Kevyudy
life phase
Ligularia retusa
lip-ribbon microphone
loner
losser effect
louis-style
low Reynolds wind tunnel
malvids
medical electron linear accelerator
monitor
myrianthum
nifurthiazole
not now
nux vomica alkaloids solution
octahedral axis
okemos
Otlichitel'nyy, Mys
overload and rupture test
oxytalan fibers
packaged rig
parseltongue
penicillin acylase
phenedrin
philanthropic activity
phillipsites
pseudoparaphyseslike centrum remnants
q fevers
Q switch
radiation absorber
rail and water traffic
rightwardly
rotameter flowmeter
rummage around
scintillator tank
self-fluxing alloy
serfaty
simulated food
slippage loss
specchie
survival rate of fish fry
talentive
tannery sludge
tenpennies
terminal points
tingsha
to backstab
vulcanic
xeriobole
zona ignea