2009年Scientific American's Six

This is Scientific Americans 60-Second Science. Im Adam Hinterthuer. Got a minute? Netflix isnt satisfied with the way its system recommends new movies to customers based on their viewing habits. So the mail-order DVD rental company has offered outsi

发表于:2018-12-24 / 阅读(141) / 评论(0) 分类 Scientific American(四)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation

发表于:2018-12-24 / 阅读(133) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. April 25th was World Malaria Day. The mosquito-borne disease is still one of the biggest killers in developing countries with a death toll of a million

发表于:2018-12-24 / 阅读(171) / 评论(0) 分类 Scientific American(四)月

This is scientific Americans 60-Sencond Science. I am Karen Hopkin. This will just take a minute. When you think about silk, you probably think of gossamer fibers woven into lustrous garments or decadently soft bedsheets. But silk is also prized for

发表于:2018-12-24 / 阅读(140) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Christie Nicholson. Got a minute? Which would you rather see: a rare Nepalese gharial or a common vole? Even without knowing what these animals are, you might be more intrigued by the gharial, simp

发表于:2018-12-24 / 阅读(117) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

发表于:2018-12-24 / 阅读(133) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. They say that money cant buy happiness. Ryan Howell believes that it cansometimes. Howell is a researcher at San Francisco State University. He thought

发表于:2018-12-24 / 阅读(119) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Angry or upset? Try picking up a pen. According to psychologist Matthew Lieberman, most people don't think of writing as a way to calm down. When you look at the bra

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(A segment of President Obamas speech to a joint session of Congress on February 24th dealing with energy and basic research:) We know the country that harnesses the power of clean, renewable energy will lead the 21st century. And yet, it is Chin

发表于:2018-12-24 / 阅读(118) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? February 28th is International Sword Swallowers Awareness Day, according to practitioner Dan Meyer, who recently demonstrated the technique at the AAAS meeting in Chic

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Our health care is too costlyand each day brings further evidence that the ways we use energy strengthen our adversaries and threaten our planet We will build the roads and bridges, the electric grids and digital lines that feed our commerce and bind

发表于:2018-12-24 / 阅读(158) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. For decades, scientists have used an imaging technique called functional magnetic resonance imaging, or fMRI, to chronicle the brain in action. But a stu

发表于:2018-12-24 / 阅读(115) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(159) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. There's a huge, gunky brown cloud that lingers over south Asia and the Indian Ocean each winter. Its been known to cause respiratory diseases and even

发表于:2018-12-24 / 阅读(142) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. You may have noticed that as you get older, you start forgetting more stuff: like, where you left your glasses, or the names of your children. Well, if y

发表于:2018-12-24 / 阅读(128) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Triceratops, as the name suggests, were huge dinosaurs adorned with three horns on their heads. Scientists now say those horns may have been a sort of

发表于:2018-12-24 / 阅读(122) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Weve all gotten e-mails warning us about nasty computer viruses. Maybe you even have antivirus software installed on your machine. Well, now scientists s

发表于:2018-12-24 / 阅读(139) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. You probably remember exactly what you were doing when you first heard the news on 9/11. Thats because the brain has ways to file information so that thi

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Sickle cell disease is a blood disorder due to a single genetic mutation. It remains in populations because the mutation has a flip sideit helps to protect against malaria. Now another mutation has been shown to afford similar protection. Deficiency

发表于:2018-12-24 / 阅读(146) / 评论(0) 分类 Scientific American(十二)月

Little girls are made of sugar and spice and, according to a study published in the journal Cell, a fierce determination to maintain their girlishness. Because it seems that a single gene keeps their ovaries from turning into testes. Scientists have

发表于:2018-12-24 / 阅读(130) / 评论(0) 分类 Scientific American(十二)月
学英语单词
Ailurus
aluring
Amagne
anal phases
argyrythrose
arteriosonervous plexus
articulationes carpometacarpeae
Barwangsan
bellows(-sealed) isolating valve
Bergentheim
Burdwan
burr grinder
Camellia lutchuensis
carrier type
catastrophic collapse
ceropria schenklingi
chamberlike
combine-harvesters
common pyrite
computer compatible tape
dial tone marker
diesel oil storage tank
diet problem
discharged to location
Elatostema microtrichum
electrical generator
enterprises run with foreign capital
extra cover point
fire extinguishing by explosion
fistful
flying bridge deck
foundation of geometry
fractions
frictionwelding
Gemma Augustea
genital branch
Gentiana crassuloides
get on towards
high-frequency inductance measurement
hinzman
impermanency
impermeable barrier
impulse breakdown
ingrayl
interrelated task
ischemic heart
isgs
islet-exocrine portal system
japanisation
joskows
knadler
knaves
lamina pyramidalis
lift a ban
Loro Ciuffenna
Macropanax parviflorus
magnesium myristate
maloy
mesosystolic
molybdic ocher
moonelis
multicircuit
muscarine poisoning
nacac
narcissus papyraceuss
next-executable statement
Nodi lymphatici epigastrici inferiores
Nowe Warpno
oversaturated rock
penicillin-resistant
Pentasachme caudatum
Phenyl-Tertiary-Butylamine
phoronis
policy advisor
Popd
post-distributions
power check
psychocutaneous disorder
radiant ceiling heating
ram side
restore faith in
retention-enema
robletts
rubber base valve
rythmic
scrap metals
setouts
soynut
start stop signal
stemilt
superfluitance
swerling
switched network backup
tachymeter surveying
thorrold
trypoxylon fronticorne
unenlightened
unfoamed crosslinked gel
Upper Devonian
value-added method
Yaroslav