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(211) / 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(214) / 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(267) / 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(214) / 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(184) / 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

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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

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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(178) / 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

发表于:2018-12-24 / 阅读(257) / 评论(0) 分类 Scientific American(二)月

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(214) / 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(173) / 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(228) / 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(202) / 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(200) / 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(188) / 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(185) / 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(239) / 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(208) / 评论(0) 分类 Scientific American(十二)月
学英语单词
2-CdA
acrolentiginous
atheronecrosis
basic bore
be in the dock
black surround
butyl phosphate
cam-ram machine
catwoman
cervical sclerites
chass? en avant
chemoselective
clear view window
clitorial
coarctatum
combined reliability
completion attempt
condensation trail (contrail)
coordinated inspection visit
cowpunchers
Curtiss
Diamantina Fracture Zone
discount for
dog-violet
dream and cream
dryass
dum fuit non compos mentis
effective percentage
Ekiatapskiy Khrebet
engagement clip
enterokinases
equality operator
errableness
Excellency
fetology
finite precision
fiori
float jet tray
flow in vortex
glycollyl
Glycyrrhiza uralensis Fisch.
handle strength
haslets
Hoffmann's muscular atrophy
Indian paintbrush
induction conduction heater
intestinum jejunum
Iris clarkei
jack board
kaisonians
kitayama
knockahs
Laki
late-in-life failure
major ragers
marine phytomorphology
mean time to restoration
menu-driven
mononeuron
nom nom nom
not worth a song
nyau
oil-sugar
One and a Half Degree Chan.
open individual licence
oshogbo
overhangs
pauciramous rhabdosome
Paxillosida
physiochemical condition
picture signal polarity
plastic injection molding machine
platform breaching
polar longitude
pre modification
Quadraticephalus
quasimodular
Quetzdölsdorf
reference fundamental component
saprophytic bacteria
Scotch snap
sea otter
sebaceous cyst of vulva
shallcross
sheep-farmers
shrink ring of commutator
silicate of soda
spark plug taps
sports publicity
star cell
steering tie rod
synarthrosis
to one's fingertips
Toronto Futures Exchange
tutamina
Tyrolian, Tyrolese
ultroneous
ventilating furnace
vote-winners
wastewater
wind veers
Yangming Channel