科学美国人60秒 SSS Hair Cells Could Heal Skin Sans Scars

Long ago, before BandAids, or even medicine of any kind, our ancestors evolved to heal cuts themselves. If you got sliced open, the body blocked it up, to prevent blood loss, water loss, infection. But as we gained that powerwe sacrificed something e

科学美国人60秒 SSS Climate Cycles Could Have Carved Canyons on Mars

The surface of Mars is etched with ancient river valleys and lake basins. Which makes researchers think that liquid water once flowed on the Red Planet. But how? Today, Mars is too cold for much, if any, liquid water to exist. And 3.8 billion years a

科学美国人60秒 SSS Adult Daughter Orcas May Trigger Moms' Menopause

Menopause marks the end of a females babymaking era. And not just for humans. Female killer whales go through menopause, too. And a new study finds that they might get pushed into menopause by their up-and-coming daughters. Those findings are floated

科学美国人60秒 SSS Bird Feeders Attract Bird Eaters, Too

More than half of U.S. households provide food for birds. It's a billion dollar industry. Now a study asks whether the same feeders that attract birds also attract predators that eat the eggs and newly hatched nestlings of those birds. We imagined th

科学美国人60秒 SSS 有女友的男人更帅?

It turns out the best looking thing on a man may be a good-looking woman. 结果证明，男性身上最耐看的是旁边站一个漂亮的女性。 Researchers report that women find a man they see with an attractive woman more desirable than unatt

科学美国人60秒 SSS 看结容易 打结难

Knot Not Easy to Knot 看结容易 打结难 Of the many puzzles mathematicians ponder, one is new ways to tie knots. There are more than six billion different types of knots that have been tabulated by mathematicians. Six billion. David Leigh, a che

科学美国人60秒 SSS 蜜蜂更偏爱含有尼古丁的花朵

Bees Prefer Flowers That Proffer Nicotine蜜蜂更偏爱含有尼古丁的花朵 We humans enjoy coffee and tea, to give our brains a caffeine boost. And bees sometimes sip nectar that naturally contains caffeine, which seems to enhance their memory.

科学美国人60秒 SSS Climate Change Fires Up Polar Bear Treadmill

Climate Change Fires Up Polar Bear Treadmill 气候变化害苦了北极熊 Polar Bears spend most of their time roaming the sea ice in search of seals. And seals spend most of their time underneath that ice, avoiding the top predator. But climate ch

科学美国人60秒 SSS Cold Snap Shapes Lizard Survivors

Cold Snap Shapes Lizard Survivors 南方寒潮中的幸存者后来都怎样了 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 Inter

科学美国人60秒 SSS "Textalyzer" Aims at Deadly Distracted Driving

Textalyzer Aims at Deadly Distracted Driving 能够测试驾驶时是否分心的神器 Fifty years ago, British inventors made and marketed the first electronic breathalyzer. The alcohol gauge has become standard issue for U.S. law enforcement crack

科学美国人60秒 SSS Social Media Sites Can Profile Your Contacts

Social Media Sites Can Profile Your Contacts 允许读取联系人等于出卖朋友？ When you install an app on your smartphone, youre often asked whether youd like to share your list of contacts with that app. That might be a convenient way to co

科学美国人60秒 SSS Solar Eclipse in 1097 May Be Rock Carving Subject

Solar Eclipse in 1097 May Be Rock Carving Subject 古代雕刻记载天文景观 More than 900 years ago, the Pueblo people were thriving in New Mexicos Chaco Canyon. While they were there, the region experienced what the whole country is looking for

科学美国人60秒 SSS Seeing One Solar Eclipse May Not Be Enough

Seeing One Solar Eclipse May Not Be Enough 观看日全食会上瘾？8.21.日全食来啦！ I expected to have this interesting intellectual experience, and instead it was just completely visceral. 我很期待这种有趣的科学体验，而且这完

科学美国人60秒 SSS A Fruitful Experiment in Land Conservation

A Fruitful Experiment in Land Conservation 橘子皮的神奇作用 In the fight to conserve tropical rainforests, here's a tool you don't often hear about: orange peels. Specifically, 12,000 tons of them, dumped on the land. You don't usually associ

科学美国人60秒 SSS This Cell Phone Needs No Battery

This Cell Phone Needs No Battery 不用电池的新型手机？ A dying battery is a huge annoyance for cell phone users. But for engineers? It's inspiration. Can we design a smartphone which can make a phone call and have a conversation without the

科学美国人60秒 SSS No Bull: Lizards Flee When They See Red

No Bull: Lizards Flee When They See Red 原来蜥蜴也怕红 You wouldn't think studying lizards is a particularly dangerous profession. Until, that is, sheriffs approach you with their guns drawn. We get the cops called on us sometimes. 你一定不认

科学美国人60秒 SSS Pollinators Shape Plants to Their Preference

Pollinators Shape Plants to Their Preference我的进化来自你的偏好 Honeybees are the charismatic microfauna of the pollination world. But flies, bumblebees, butterflies and mothsthey all pollinate, too. With varying degrees of success. The po

科学美国人60秒 SSS African Penguins Pulled into an Ecological Trap

African Penguins Pulled into an Ecological Trap生态陷阱迷惑了可爱的企鹅 Over millions of years, penguins have evolved a keen sense of where to find food. Once theyre old enough, they set off from the shores on which they hatched for the f

科学美国人60秒 SSS Poverty Shaves Years off Life

Poverty Shaves Years off Life贫穷是疾病的一大根源 Back in 2011 member countries of the World Health Organization, the WHO, came up with a plan to cut mortality from noncommunicable diseases 25 percent by the year 2025. The program was thus

科学美国人60秒 SSS Teachers' Racial Biases Have Different Effects for High Versus Low Performers

Teachers' Racial Biases Have Different Effects for High Versus Low Performers平等对待每一个学生 The ways teachers view their students can influence how teachers teach. Which affects how and what students learn. Now a study finds that a teach