Scientific American's Sixty

Donald Trump hasn't been running the most traditional campaign. And it's not just the unfiltered tweets. He's neglecting campaigning full stop. Thomas Wood, an assistant professor of political science at Ohio State. He's had about half as many public

发表于:2018-12-24 / 阅读(279) / 评论(0) 分类 未知分类

Small carnivoreslike foxes or raccoons or badgersare themselves prey for larger predatorslike wolves. So they spend time hiding instead of hunting. This influence that big predators have on their ecosystem is called a landscape of fear. But humans ar

发表于:2018-12-24 / 阅读(199) / 评论(0) 分类 未知分类

Air pollution outside is easy to spot, hanging over the city, or sputtering from a tailpipe. But there's lot of indoor air pollution, too, even if it's not as obvious. It's caused by volatile organic compounds, or VOCs. They can come from building ma

发表于:2018-12-24 / 阅读(188) / 评论(0) 分类 未知分类

Last week, tens of thousands of gallons of sewage gushed into urban streams in Baltimore, because of leaky pipes and flooding rains. And when that happens, it's not just organic matter and microbes that get flushed into aquatic habitats. It's drug re

发表于:2018-12-24 / 阅读(133) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(131) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(122) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(115) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(141) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(137) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(115) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(120) / 评论(0) 分类 未知分类

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-24 / 阅读(111) / 评论(0) 分类 未知分类

Its easy to see that some plants change from day to nightflowers open and close, and even turn to face the sun. In 1880 Darwin noted that the leaves and seedlings of various plants appeared to engage in nighttime changes that he called sleep. But the

发表于:2018-12-24 / 阅读(161) / 评论(0) 分类 未知分类

Ebola outbreaks before the most recent one have been fairly contained: geographically limited, and just a couple hundred cases. The latest outbreak, though, which started in late 2013 and lasted more than two years, was entirely different. There were

发表于:2018-12-24 / 阅读(137) / 评论(0) 分类 未知分类

As somebody who is part of the executive branch and serving in this role which I can consider to be a great privilege, as director of NIH, I am confident that the convictions that are held by many Americans and by most members of the Congress, that b

发表于:2018-12-24 / 阅读(168) / 评论(0) 分类 未知分类

The last few years have seen numerous widely publicized incidents of civilians, black men in particular, being killed by police. In response, many officers are now required to wear body cameras. The theory is that technology will lessen the likelihoo

发表于:2018-12-24 / 阅读(126) / 评论(0) 分类 未知分类

The way we sample much of the world's oceans, to see what's living down there, is pretty basic: Ask fishermen. Or just stick a net down there, and examine what we catch. Neither method is ideal. Because you basically catch the fish and kill them. Phi

发表于:2018-12-24 / 阅读(145) / 评论(0) 分类 未知分类

Climate change may be partly to blame for the massive die-off of pine trees in the western U.S. But it works the other way, too: forest die-offs can alter the global climate. I like thinking of this as a parallel to something like El Nino. Abigail Sw

发表于:2018-12-24 / 阅读(129) / 评论(0) 分类 未知分类

Your nose may be the first place you think of as a source of mucus. But mucus is a major player in your gut, too. There's antimicrobial peptides and proteins that are present in there. Bacteria live in there and forage on the carbohydrates. And it's

发表于:2018-12-24 / 阅读(146) / 评论(0) 分类 未知分类

The Unnatural World is the title of a new book by former Scientific American environment editor David Biello. The subtitle: The Race to Remake Civilization in Earths Newest Age. And that age has been dubbed the Anthropocenein which humanity (anthro)

发表于:2018-12-24 / 阅读(147) / 评论(0) 分类 未知分类
学英语单词
adjei
aerodynamic maneuver
airborne geophysical prospecting
Alcay
aleucocytosis
Alkean
and the devil knows what who
arm's
as broad as it it's long
as sure as eggs is eggs
bas respnse
bembo
biolimiting element
block trader
boldnesses
bone cyst
book of criminal laws
britto
cary
Chicano studies
chicken giblets cocktail
circumlinear
Cnestis
code-type radiosonde
complete order
computer-generated command
concolor
contract officer
coronest
daffingly
dancing girl
dark brown star
dormant time
earses
engineering data base
eventation
extrasectorial
feedwater line break
filoplumes
fliggy
fluid friction brake
forms path
frustulent
genital recess
glenohumeral joint
go with a bang
griceite
Hapaline ellipticifolium
Hattusilis I
i-wrapped
image texture
imparters
incomplete type definition
influenceable
insufficiently packed for ocean voyage
interluding
IQs
Kargopol'
kyghth
lapis imperialis
length of time
light handed regulation
lineages
littoral barrier
lunar space flight
main memory system
mill works
Millean
model in wind tunnel
monosialylated
multiprocess environment
navigational radar equipment
off-focus radiation
POHB
psych up
punch with corrugated nose
Quercus ilicifolia
reboil bubble
riordan's internet privacy enhanced mail
Risley prism
rotation diffusion constant
rustic arch
samosa
seleneno
semi-automatic hob grinding machine
sharp cut filter
signac
specialty synthetic fibre
structural fabric
sum of insurance
suspension mount
synovial layer
talbotton
Tel Aviv Stock Exchange
Tendipedidae
troop-ship
typing pool
venesections
VIDAC (visual information display and control)
vilvillians
volume-unit meter
waylayers