科学美国人60秒 SSS Individuals' Blood Glucose Levels after Meals May Be Predictable

Individuals' Blood Glucose Levels after Meals May Be Predictable预测血糖 High blood sugar levels are a risk factor for type 2 diabetes. Doctors today have only general dietary recommendations for how to control those levels, because theres no rea

科学美国人60秒 SSS Healthful Diet Switch Helps Even Late in Life

Healthful Diet Switch Helps Even Late in Life论人生晚年健康饮食的重要性 Lets say your diet has been not so great. Maybe too much red meat, especially processed meat. Maybe too many sugary soft drinks. And maybe youve been eating like tha

科学美国人60秒 SSS 数天百年的效果

Extreme Storms Are Extreme Eroders数天百年的效果 In 2013, a rare September storm swept across the plains of Colorado. When it hit the Rockies, it dropped more than a foot of rain in places like Boulderas much as the city sees in an entire year

科学美国人60秒 SSS 预测血糖

Individuals' Blood Glucose Levels after Meals May Be Predictable预测血糖 High blood sugar levels are a risk factor for type 2 diabetes. Doctors today have only general dietary recommendations for how to control those levels, because theres no rea

科学美国人60秒 SSS 论人生晚年健康饮食的重要性

Healthful Diet Switch Helps Even Late in Life论人生晚年健康饮食的重要性 Lets say your diet has been not so great. Maybe too much red meat, especially processed meat. Maybe too many sugary soft drinks. And maybe youve been eating like tha

科学美国人60秒 SSS

Nobel in Chemistry for Seeing Biomolecules in Action 诺贝尔化学奖微化分子结构 The Royal Swedish Academy of Sciences has decided to award the 2017 Nobel Prize in Chemistry jointly to Jacques Dubochet, Joachim Frank and Richard Hendersonfor

科学美国人60秒 SSS 听不见我的声音?!

This Frog Can't Hear Its Own Calls In the frog world, romance is often accompanied by a song. It's the norm. The vast majority of frogs have males calling to attract females. 在青蛙的世界，浪漫总与歌声相随。这是一种常态。绝大多

科学美国人60秒 SSS Climate Change Might Shrink Fish

Climate Change Might Shrink Fish 气候变化会迫使鱼类变小 As the world's oceans heat up, salmon are migrating earlier. Plankton are shifting their range. But warmer water temperatures also mean warmer fishand faster-running metabolisms. 随着

科学美国人60秒 SSS Recycle Your Eclipse Glasses

Recycle Your Eclipse Glasses 公益！回收利用日食观测镜 Youve all taken off your glasses by now, along with the family and friends of my friend Dennis Meredith. Because the Great American Eclipse of 2017 has come and gone. And most people i

科学美国人60秒 SSS Winking Star Six Centuries Ago Explained

Winking Star Six Centuries Ago Explained 揭秘600年前那颗一闪即逝的恒星 On March 11, 1437, Korean royal astronomers noticed something out of the ordinary in the night sky. There was a brand new star they'd never seen before, between two o

科学美国人60秒 SSS Rabbit Relatives Reel from Climate Change

Rabbit Relatives Reel from Climate Change 气候变化又将害死谁 Up in Californias High Sierra, above the dense pine forests, rocky habitats reign. And if you look carefully among the boulders, you might see a pikaa rabbit relative the size of a

科学美国人60秒 SSS Medical Marijuana Faces Fed's Catch-22

Medical marijuana is now available in 28 states. But a big obstacle to research on marijuana as medicine is that its listed by the federal government on whats called Schedule I. Assignment to Schedule I means that the Food and Drug Administration doe

科学美国人60秒 SSS Blood Cells Remember Your Mountain Vacation

Head to the mountains, and if the steep trails don't slow you down, the thin air will. There's less oxygen up thereso strenuous activity can leave you dizzy, out of breathor worse. But even though you're beat, biochemical processes are already busy a

科学美国人60秒 SSS Fermented Foods Find Fervent Advocate

There are sort of three main ways that our species has developed to break down foods, or process foods, in a primordial way. And that is by cooking, by fermenting foods and by drying them or desiccating them. Paul Breslin, professor of nutritional sc

科学美国人60秒 SSS Vision Needed to Curb Nearsightedness Epidemic

So were inside, were in fake lighting, were not spending as much time outside in the context in which our visual system evolved. Amanda Melin, assistant professor of anthropology archaeology and of medical genetics at the University of Calgary. And a

科学美国人60秒 SSS Guppy Groups Provide Friendly Protection against Foes

Humans aren't the only species that forms friendships. Lots of animals prefer to spend their time only with certain individuals. It's all very well showing that you do get social relationships and social bonds forming, but why on earth would you form

科学美国人60秒 SSS Spaceflight Squishes Spacefarers' Brains

Time spent in zero G changes the body: Astronauts come home with bone loss and muscle weakness. But what happens in their heads? To find out, researchers examined MRIs of astronauts brains taken before and after flight. They looked at 12 astronauts w

科学美国人60秒 SSS Two Words Trigger CDC To Stay Quiet

CDC is afraid is afraid to fund firearms research. David Hemenway, professor of health policy at the Harvard T.H. Chan School of Public Health. Twenty years ago they were doing a tiny amount of funding for firearms research, $2.6 million a year, $2.6

科学美国人60秒 SSS The True ＂Bottom＂ of the Food Chain Is Plenty Polluted

The Mariana Trench is the deepest spot in the worlds oceans. Only three humans have ventured into the trench in submersibles. But plenty of our pollution has made the voyage to the bottom of the sea: a new study finds that critters living more than s

科学美国人60秒 SSS Heat Sensor Has Snaky Sensitivity

One of the most exquisite heat sensors in the worldits not in some government lab. It's in the head of a snake. The pit viper, to be specific. They're incredibly sensitive. They beat any of the synthetic counterparts, even the most expensive semicond