科学美国人60秒 SSS 先思后”言”

Right Whales Seem To Think Before They Speak As animals grow, the sounds they make change. But some sounds continue to change, even after an animal matures. That's true for humans, and now it turns out to be true for North Atlantic right whales, too.

科学美国人60秒 SSS 提高光合作用能使作物增加产量

Rev Up Photosynthesis To Boost Crop Yields 提高光合作用能使作物增加产量 Photosynthesis is surprisingly inefficient, only of the order of one to two percent. And one of the main culprits is an enzyme called RuBisCo. 光合作用效率低得

科学美国人60秒 SSS 比特币的发展历史与未来

There are now more than 16 million bitcoins incirculation, with a total market cap of 130 billiondollarsmore than the market value of Netflix, Priceline or Starbucks. Just going by numbers, bitcoin is the one coin to rule them all. 目前在流通的比

科学美国人60秒 SSS 西海岸海滩下有13,000年历史的足迹

13,000-Year-Old Footprints Under West Coast Beach During the last ice age, the northern half of North America was blanketed by ice. But along the Pacific coast of Canada, some land remained barea place where animals and plants could thrive. And human

科学美国人60秒 SSS 相生相克

Planting Milkweed for Monarchs? Make Sure it's Native Monarch butterflies depend on milkweed. They lay their eggs on milkweed, and their caterpillars eat only the leaves of the plant. No milkweed means no monarchs. So the best way to help declining m

科学美国人60秒 SSS 互联网需要调整

The Internet Needs A Tune-Up So, the internet is really a network of networks that underlies CRItically so many things in our lives. But really 50 years ago it was an experiment that escaped from the lab. And it wasnt really designed to be the global

科学美国人60秒 SSS 押宝可不是随意的！

Brain Scan Might Reveal Appetite for Risk Here's the gamble: Twenty bucks guaranteedor a 50/50 chance of winning sixty bucks?Which would you choose? 赌博游戏规则：20块钱押宝...或50/50赢取60块钱的机会?你会选择哪一个? The answ

科学美国人60秒 SSS 其实我们无时无刻在练习吹口哨

Next time you find yourself at a karaoke bar, let me suggest a song:Otis Redding's Sitting on the Dock of the Bay. 下次在卡拉OK酒吧时，我给您推荐一首歌吧：Otis Redding坐在海湾的码头上。 The reason? It's got whistling in it

科学美国人60秒 SSS 我们懒一点对蜜蜂是有好处的

Bees Have a Goldilocks Lawn Mow Schedule Add up every golf course, athletic field, industrial park, and yard in the U.S. and you have an area nearly the size of Florida. Upon first glance, all that lawn might seem a biological wastelanda monoculture

科学美国人60秒 SSS Neandertal Face Shape Was All Over the Air

Neandertal Face Shape Was All Over the Air The jutting midface of Neandertals seems to have evolved to help get large volumes of air into an active body that needed lots of oxygen. Full Transcript Neandertal walks into a bar. Bartender says, Why the

科学美国人60秒 SSS Brain Scan Might Reveal Appetite for Risk

Volunteers willing to place riskier bets tended to sport larger amygdalasa region associated with processing fear. Christopher Intagliata reports. Full Transcript Here's the gamble: 20 bucks guaranteedor a 5050 chance of winning 60 bucks? Which would

科学美国人60秒 SSS Old New England Underground May Be Spry after All

The U.S. Northeast may be more geologically active than was previously thought, according to a seismic sensor network. Full Transcript Hi, Im Scientific American podcast editor Steve Mirsky. And heres a short piece from the April issue of the magazin

科学美国人60秒 SSS X射线可能照射到一些可居住外行星区域

Some Habitable Zone Exoplanets May Get X-Rayed Out X射线可能照射到一些可居住外行星区域 As astronomers hunt for habitable, Earth-like worlds, one popular place to look is around M stars, a type of red dwarf. Couple reasons for that: 当

科学美国人60秒 SSS 纽约市老鼠被病原体包围

NYC Mice Are Packed with Pathogens Rats. They're a defining feature of life in New York City, rustling in trash bags, scurrying along the subway tracksand becoming famous for occasionally eating pizza. But these urban vermin may be less of a threat t

科学美国人60秒 SSS 心情很重要哦~

Bouncy Gait Improves Mood A good mood may put a spring in your step. But the opposite can work too: purposefully putting a spring in your step can improve your mood. Thats the finding from a study in the Journal of Behavior Therapy and Experimental P

科学美国人60秒 SSS 路易丝斯劳特是国会食品安全领导者

Louise Slaughter Was Congress's Food Safety Champion Legislation to restrict the current overuse, I would say abuse, of antibiotics by farmers who raise livestock for human consumption.Louise Slaughter, member of Congress from upstate New York, in 20

科学美国人60秒 SSS 火星真的会撞地球?

Chaotic Orbits Could Cause Catastrophic Collision Isaac Newton said, I can calculate the motion of heavenly bodies, but not the madness of people. He meant that while people can be unpredictable, the planets are just the oppositethey glide through sp