2018年科学美国人

Nice People Have Emptier Wallets Are you an agreeable personyou know, a nice guy? If so, a logical follow-up might be: how are your finances? And here's why: Agreeable peoplehave lower savings, they have higher debt, and they're also more likely to g

发表于:2019-02-18 / 阅读(150) / 评论(0) 分类 2018年科学美国人10月

Mom's Genes Make Some Giraffes Hard to Spot Just like humans have virtually unique sets of fingerprints, every giraffehas a unique set of spots. Not that those spot patterns really help wildlife biologists identify their study subjects in real time.

发表于:2019-02-18 / 阅读(173) / 评论(0) 分类 2018年科学美国人10月

Scanning Ancient Civilizations from the Skies If there's a fifth Indiana Jones movie, Indy might want to use one of the hottest new tools revolutionizing archaeology: LiDAR, or Light Detection and Ranging, which allows archaeologists to survey ancien

发表于:2019-02-18 / 阅读(184) / 评论(0) 分类 2018年科学美国人10月

Human Echolocators Use Tricks Similar to Bats Many bats use a system similar to sonar to navigate in the dark. They send out high frequency sound, sometimes as clicks, and get information about their surroundings by the timing and quality of the soun

发表于:2019-02-14 / 阅读(171) / 评论(0) 分类 2018年科学美国人3月

Right Whales Seem To Think Before They Speak As animals grow, the sounds they make change. But some sounds continue to change, even after an animal matures. That's true for humans, and now it turns out to be true for North Atlantic right whales, too.

发表于:2019-02-14 / 阅读(175) / 评论(0) 分类 2018年科学美国人4月

Rev Up Photosynthesis To Boost Crop Yields 提高光合作用能使作物增加产量 Photosynthesis is surprisingly inefficient, only of the order of one to two percent. And one of the main culprits is an enzyme called RuBisCo. 光合作用效率低得

发表于:2019-02-14 / 阅读(144) / 评论(0) 分类 2018年科学美国人4月

Math Cracks a Knuckle-Cracking Mystery Knuckles cracking. You may not mind the sound. You may despise it. Or you could study it. 指节开裂。你可能没有注意到它的声音。 你可能会鄙视它。 再或者你可以研究它。 Couple yea

发表于:2019-02-14 / 阅读(132) / 评论(0) 分类 2018年科学美国人3月

Ravens Crow with Individual Flair There's a well-known conspiracy of ravensthat's what you call a group of ravensthat likes to hang out near a zoo in the Austrian Alps. Every day these ravens conspire to steal the food that's set out for the wild boa

发表于:2019-02-14 / 阅读(157) / 评论(0) 分类 2018年科学美国人3月

Cold Snap Shapes Lizard Survivors In January 2014, an epic cold wave swept across the southeasta snowpocalypse so severe that thousands of drivers in Atlanta abandoned their cars on icy highways and Interstates. 在2014年1月,一场被称为末日暴

发表于:2019-02-14 / 阅读(134) / 评论(0) 分类 2018年科学美国人3月

Arctic Heat Waves Linked to Snowpocalypse-Like Storms February was unusually hot in the arctic. Thawing out temperature: 35 degrees Fahrenheit.It made big news when it got to 35, I don't know if that's t-shirt weather yet, but 北极在二月时异常炎

发表于:2019-02-14 / 阅读(124) / 评论(0) 分类 2018年科学美国人3月

Drones Could Help Biologists Tally Birds Ecologists crouching quietly amidst vegetation, using binoculars to tally birds in a roost, may soon be a charming relic of the past. Because a new study shows that, when it comes to getting an accurate avian

发表于:2019-02-14 / 阅读(175) / 评论(0) 分类 2018年科学美国人3月

Life Extension May Add Just Bad Time Living longer doesnt necessarily mean living better. Thats the lesson from the tiny roundworm called C. elegans, long a workhorse in basic biology lab work. The research is in the Proceedings of the National Acade

发表于:2019-02-14 / 阅读(142) / 评论(0) 分类 2018年科学美国人3月

Saliva Protein Might Inhibit Intestinal Anarchy 唾液蛋白可能抑制肠道无序状态 Every day, you produce one to two liters of spit. It kick-starts digestion and helps you swallow. And it helps prevent bacterial infection in your mouth. 每天,

发表于:2019-02-14 / 阅读(123) / 评论(0) 分类 2018年科学美国人3月

Searching the Heavens for Mountains In the last few decades, astronomers have discovered thousands of exoplanets orbiting other stars. Now, scientists want to know what they look like. Do they have oceans? Atmospheres? Researchers have even searched

发表于:2019-02-14 / 阅读(129) / 评论(0) 分类 2018年科学美国人3月

Psychologist Saho Takagi, a graduate student at Kyoto University in Japan, strolls into one of Japan's many cat cafes. These establishments allow customers to pay an hourly fee for the chance to cuddle some cats. They're popular in Japan because so m

发表于:2019-02-14 / 阅读(122) / 评论(0) 分类 2018年科学美国人3月

Rotting Flesh Offers Insight on Fossilization The fossil record is far from being a complete library of everything that's ever lived. 化石记录不止是曾经存活生物的藏书阁. The vast, vast majority of everything that's ever lived has com

发表于:2019-02-14 / 阅读(181) / 评论(0) 分类 2018年科学美国人3月

Just as humans understand the shape of oursurroundings by how light reflects off objects, batsuse reflections of sounds they produce insteadwhat's called echolocation. But despite theirexcellent sensing abilities, one type of obstaclevexes the animal

发表于:2019-02-14 / 阅读(125) / 评论(0) 分类 2018年科学美国人1月

Baby Bats Can Learn Different Dialects Bats are sophisticated communicators. And not just when theyre in vampire form. New research finds that Egyptian fruit bats actually have regional dialects, depending on the bat chatter that surrounds them as th

发表于:2019-02-14 / 阅读(136) / 评论(0) 分类 2018年科学美国人1月

Populations of frogs, salamanders and other amphibians are declining around the worldeven in protected areas, like U.S. national parks. Ecologists needed a simple method to track the animals numbers. Now, researchers have found an effective way to ke

发表于:2019-02-14 / 阅读(108) / 评论(0) 分类 2018年科学美国人1月

Small, tasty mammals like dwarf mongooses have one main goal: do not get eaten. So the animala type of weaselhas a surveillance system. While most of the group focuses on finding food, a handful of others watch for predators. They take turns so that

发表于:2019-02-14 / 阅读(175) / 评论(0) 分类 2018年科学美国人1月
学英语单词
alinement
allowees
amiserica babai
annelid worms
attokatal
brule
bulk inclusion
Calstabin
capscrews
Carex transversa
Chemenibit
cibolo
coast piloting
codemakers
coil measurement
collision time
commercial distribution area
convolutely
cord pair
cormophytic
corversion angle
Cruikshank
deoxyriboside
dial barometer
during a drought
excision repair deficient mutant
fire resistance steel door
fliege
fling down the gauntlet
fragmentation gas shell
future business
geick
general permit
genus Colobus
geometrically fixed
giovanni lorenzo berninis
globin zinc insulin
gostkowski
Gowers'tract
hairpin turn
hairy ears
high-density digital storage
high-temperature short-time sterilizing
horror
indicated tractive effort
indirect least squares method
INTACS
interchange with
joint committee
judiciary power
key player
Kochia laniflora
local primary membrane stress
low-volume
mass quotation facility
Melbourne, University of
microprogram language
Moschical
Mullaghmore
newborn jaundice
non-gravitational effect
noncontractually
nozzle opening reinforcement
odontoceramics
order around someone
orectolobuss
pachamama
parted leaf
pfaffikons
photogenic bacteria
pillbugs
playing the field
plutoniferous
price gougings
pulse Doppler system
quotes
radioactive element (radioelement)
regular index
riminess
Ririlim
roasted ore
run an account
sat through
say much for
science of personnel management
source input record
stone deaf
telebet
tetrahydric phenol
thiuretic acid
thoracic salivary glands
Threlkeldia
thrustle
transmission authentication
Tri Ton
uncentered uniaxial interference figure
untitheable
upvalued
Video Alpha
VME bus
White English