2017-11-10 所属栏目:科学美国人

Today, November 4, is National Bison Day—celebrating the animal that last year Congress and the President designated as the official National Mammal of the United States. For

2017-11-09 所属栏目:科学美国人

In the last two years, astronomers have found seven exoplanets around the star TRAPPIST-1, only 40 light-years away. As well as a planet called Proxima b, orbiting Proxima Centaur

2017-11-08 所属栏目:科学美国人

Today, November 4, is National Bison Day—celebrating the animal that last year Congress and the President designated as the official National Mammal of the United States. For

2017-11-06 所属栏目:科学美国人

Woolly mammoths once ruled the northern reaches of our planet—roaming from Portugal to Siberia, and beyond to Alaska, Canada and the American midwest. And the massive beasts

2017-11-06 所属栏目:科学美国人

For 4,500 years, the Great Pyramid, or Khufu's Pyramid, has kept watch over the Egyptian desert. In that time, it's suffered the indignities of tomb raiders and gunpowder-toting

2017-11-03 所属栏目:科学美国人

Meet the wood tiger moth. Its bright yellow, red, or orange scales send a warning to potential predators.

"These wonderful conspicuous colors tend to be connected, or linked, to s

2017-11-02 所属栏目:科学美国人

California's most recent drought - which officially ended this spring - made national, even international news. <<NEWS MONTAGE: "We're in an historic drought / The driest on reco

2017-10-31 所属栏目:科学美国人

China is notorious for its heavy smog. "It's incredibly bad." Denise Mauzerall, an atmospheric scientist at Princeton. "The air pollution in eastern China can be so bad you can't

2017-10-26 所属栏目:科学美国人

If you need help herding some sheep or retrieving a stick, you can count on your canine companion. Because dogs always seem to be keen on lending a paw. But only if their partner i

2017-10-25 所属栏目:科学美国人

There are thousands of gun shows in the U.S. each year—swap meet&ndash;type gatherings where the sellers' tables are covered in guns, ammunition, accessories, books.

Just a

2017-10-24 所属栏目:科学美国人

Sucking blood is risky business. At least for the female mosquitoes that need those nutrients to nurture their developing eggs. Not only do these bugs have to find a suitable blood

2017-10-23 所属栏目:科学美国人

It seems every week we find out that someone broke into a big company&rsquo;s databases—like the recent Equifax data breach—and made off with millions of credit card nu

2017-10-23 所属栏目:科学美国人

When lightning sparks across the sky, it sends out low-frequency radio waves that researchers can use to determine its location. Recently, scientists were looking over a map of lig

2017-10-18 所属栏目:科学美国人

Aflatoxins. They&rsquo;re produced by funguses that infect crops. And they can cause liver cancer, immune damage and other health problems. Rare outbreaks related to peanuts or cor

2017-10-17 所属栏目:科学美国人

Humans are hardly alone in their need for sleep—as any cat owner knows. But what about other, very different animals?

“In thinking about this&hellip;we wanted to use a

2017-10-16 所属栏目:科学美国人

We humans sometimes use a memory technique called chunking. For example, with phone numbers we usually remember the three-digit chunk and the four-digit chunk. Two items instead of

2017-10-13 所属栏目:科学美国人

New technology is putting the focus on rarely witnessed aggression between two of the fiercest predators in North America. For the last few decades, populations of cougars and bear

2017-10-12 所属栏目:科学美国人

Smartphones can already verify your identity by scanning your fingerprint or your face. But there&rsquo;s something inside you that&rsquo;s also unique proof that you&rsquo;re you.

2017-10-08 所属栏目:科学美国人

A humid bathroom is the perfect habitat for mold. But there are ways to avoid it. "We can just open the window and let some fresh air in!" Not so easy on a space station though, as

2017-10-08 所属栏目:科学美国人

“The Royal Swedish Academy of Sciences has decided to award the 2017 Nobel Prize in Chemistry jointly to Jacques Dubochet, Joachim Frank and Richard Henderson&hellip;for deve

2017-10-08 所属栏目:科学美国人

“The Royal Swedish Academy of Sciences has decided to award the 2017 Nobel Prize in Physics with one half to Rainer Weiss and the other half jointly to Barry C. Barish and Ki

2017-10-08 所属栏目:科学美国人

“The Nobel Assembly at Karolinska Institute has today decided to award the 2017

Nobel Prize in Physiology or Medicine, jointly to Jeffrey C. Hall, Michael Rosbash and Michae

2017-10-08 所属栏目:科学美国人

In the 1800s, renowned explorer and naturalist Alexander von Humboldt observed a bizarre incident in the Amazon: he saw electric eels leaping into the air and shocking two horses.

2017-10-08 所属栏目:科学美国人

Of the many thousands of species of birds on Earth, only about 25 are known to do something special with their food—they dunk it in water before eating.

Nobody knows for sur

2017-10-08 所属栏目:科学美国人

The massive earthquake that rocked Japan in March 2011 took thousands of lives. It sent tsunami waves more than a hundred feet high towards northern Japan, where they battered the