栏目广告位一 |
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科学美国人60秒:No Bull: Lizards Flee When They See Red
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."
科学美国人2017-08-11 -
科学美国人60秒:Celebrities Tweet Like Bots
Twitter has more than 300 million monthly active users. But researchers have estimated that between about 30 million and 50 million of those are Twitter bots—automated accoun
科学美国人2017-08-10 -
科学美国人60秒:Cold Snap Shapes Lizard Survivors
In January 2014, an epic cold wave swept across the southeast—a "snowpocalypse" so severe that thousands of drivers in Atlanta abandoned their cars on icy highways and Inters
科学美国人2017-08-07 -
科学美国人60秒:Mediterranean Diet Works--for Upper Crust
The Mediterranean diet is well known for its heart-healthy effects. It even sounds healthful: lots of fruits and veggies, whole grain and legumes. Plus olive oil, a bit of red wine
科学美国人2017-08-07 -
科学美国人60秒:Screams Heard Round the Animal World
What does panic sound like? <<clip of Homer Simpson scream>> Like that, for sure. But also like this <<pig sound>>. And this <<chickadee sound>>. But maybe you already knew that. B
科学美国人2017-08-02 -
科学美国人60秒:This Caterpillar Whistles While It Irks
Songbirds produce a rich repertoire of sounds: songs, of course, but also chatter calls, flight calls and alarm calls: like this high-pitched warning from a black-capped chickadee:
科学美国人2017-08-01 -
科学美国人60秒:To Buy Happiness, Spend Money on Saving Time
We all know money can’t buy happiness. But according to a recent study, there may be a loophole. A team of researchers finds that shelling out for services that save time can
科学美国人2017-07-31 -
科学美国人60秒:Bacteria Can Be Resistant to Brand-New Antibiotics
Perhaps the chief poster child of antibiotic resistance is methicillin-resistant Staphylococcus aureus, or MRSA. The bacterium is impervious to a suite of antibiotics, and can caus
科学美国人2017-07-27 -
科学美国人60秒:Teaching Computers to Enjoy the View
What sort of scenery do you find most appealing? Researchers in the U.K. asked volunteers that question, through an online photo-rating game, and the result was sort of what you'd
科学美国人2017-07-26 -
科学美国人60秒:Flying through a Corpse's Clues
As soon as a person dies, decomposition begins. And the first visitors arrive. "Within five to 15 minutes of death, blowflies or other insects begin to colonize the body." Rabi Mus
科学美国人2017-07-20 -
科学美国人60秒:Old Records Help Resurrect Historic Quake
Ninety-nine years ago, a magnitude 7.3 earthquake hit Puerto Rico. It also caused a tsunami that swept through coastal towns. All told, the shaking and flooding killed more than 10
科学美国人2017-07-18 -
科学美国人60秒:Bacteria Might Share the Blame for Eczema
Your skin—like many other parts of your body—is crawling with microscopic critters. "It's a microbial zoo in a sense." Heidi Kong, a dermatology researcher at the Nati
科学美国人2017-07-13 -
科学美国人60秒:Franklin's Lightning Rod Served Political Ends
Besides helping to create the United States of America, Benjamin Franklin of course invented the lightning rod. Which sits atop buildings and protects them by attracting lightning
科学美国人2017-07-10 -
科学美国人60秒:Beer Marinade Cuts Grilling Carcinogens
Grillmasters already know that a cold brew is a fine companion at the barbecue. So here's some science to toast to—marinating meat in beer actually cuts the number of potent
科学美国人2017-07-05 -
科学美国人60秒:Heat Will Hit America's Poorest Worst
In President Trump's June 1st speech withdrawing the U.S. from the Paris Climate Accord, he claimed the climate agreement was costing American workers. In a whole lot of ways: "In
科学美国人2017-07-03 -
科学美国人60秒:Rainbow Photons Pack More Computing Power
Computers transmit information in bits: 0’s and 1’s. Off or on. But in quantum computers, that off/on logic becomes more flexible. Because the bits in quantum computing
科学美国人2017-07-03 -
科学美国人60秒:Moths Inspire Better Smartphone Screens
One of the things that makes your smartphone so smart is that if you pull it out in the sun, it senses that—and dials up the screen brightness to compensate. But it's not a
科学美国人2017-06-29 -
科学美国人60秒:Better Memory Begets Boredom
Summer’s here and it won’t be long before school-aged kids across America start complaining that they’re tired…of riding their bikes, playing at the park,
科学美国人2017-06-27 -
科学美国人60秒:DNA Points to Multiple Migrations into the Americas
For more than ten thousand years, Alaska Native and Canadian First Nations people have lived along the Northwest coast of North America. Now, ancient remains have provided genetic
科学美国人2017-06-26 -
科学美国人60秒:Keep Rolling Luggage Upright with Physics
If you've ever pulled a rolling suitcase through the airport, chances are you've also been annoyed by this common occurrence: the suitcase starts rocking back and forth on each w
科学美国人2017-06-23 -
科学美国人60秒:Wolves Need More Room to Roam
[wolf sound]
科学美国人2017-06-22
Wolves are vital players in various ecosystems. So we humans need to develop a better tolerance for wolves. And the wolves need more space. That’s according to -
科学美国人60秒:Engineers Build Bendy Batteries for Wearables
The flat lithium ion batteries that power smartwatches are built by stacking the battery components: positive and negative electrodes, current collectors and a separator. It's aki
科学美国人2017-06-21 -
科学美国人60秒:Rising Temps Lower Polar Bear Mercury Intake
As climate change warms the Arctic, sea ice there is disappearing at record rates—sea ice that polar bears prefer to prowl. As a result, some bears are spending more time on
科学美国人2017-06-20 -
科学美国人60秒:Some Hotel Bed Bug Sightings May Be Bogus
If you're a savvy traveler, when you hunt for a hotel you probably search TripAdvisor for any mention of bed bugs. But here's the dirty secret behind those bed bug sightings: "Th
科学美国人2017-06-16 -
科学美国人60秒:Opioids Still Needed by Some Pain Patients
“The opioid epidemic is a national crisis that should not be underestimated.” That’s a quote from a June 1st New England Journal of Medicine perspective piece by
科学美国人2017-06-15
栏目广告位二 |