科学美国人60秒 SSS 水下的统治者到底是谁

Sharks Rule the Reef's Underwater Food Chain Predators like wolves affect their ecosystems by eating their prey. But a more subtle impact involves fear. Predators also terrify prey species. And when, for example, elk are hiding, they don't spend as m

科学美国人60秒 SSS 生存不易 互相搀扶

Human parents usually have one or sometimes two offspring at a time, and when babies get delivered we pour all our energy into childrearing. But other animals raise lots of babies at once. And the weaker individuals can be at a big disadvantage. If t

科学美国人60秒 SSS 社交媒体帮助识别身份证来源

Social Media Helps ID Belch Source If youve ever checked out the restaurant reviews on Yelp, you know that these little missives can tell you whether a bistro is overpriced or understaffed or just nothing to write home about. But they may also be abl

科学美国人60秒 SSS 全球一起努力让科学成为可能

Worldwide Effort Says Together Science Can Collaboration in science across the world is the key to a better world in the future. Doesnt matter whether its drug resistance or climate change or social inequalities. All of these, I believe, can be broac

科学美国人60秒 SSS 暗光纤网络可以感知地震活动

Dark Fiber Networks Can Sense Seismicity When an earthquake hits or a volcano erupts, scientists traditionally record the shaking using a specially designed instrument called a seismometer. These sensors are extremely sensitive, but theyre also expen

科学美国人60秒 SSS 月亮引力不会导致大地震

Moon's Tug Doesn't Cause Big Quakes On March 27th, 1964, a huge earthquake struck the Prince William Sound, off the coast of Alaska. Out in the gulf of Alaska, the ocean bottom plunges, then heaves upward a full 50 feet, and a wave starts racing towa

科学美国人60秒 SSS 生物多样性的信息随时间变化

Needed: Info on Biodiversity Change over Time We find that the composition of ecosystems around the world is changing much more rapidly than we expected. Indeed, much more rapidly than ecological theory predicts. 我们发现，世界各地生态系统

科学美国人60秒 SSS 大城市人均推文减少

Big Cities Have Fewer Tweeters Per Capita Walking in New York City is almost a competitive sport. And people in cities really do walk faster than their country counterparts2.8 feet per second faster, according to a worldwide study in the 1970s. But t

科学美国人60秒 SSS NRA会议期间枪击事件下降

To See Gun Injury Drop Hold An NRA Meeting The annual meeting of the National Rifle Association is coming up in May. It's scheduled for Dallas. And if past events are any guide, gun injuries may actually go down in Texas, during the event.When a conv

科学美国人60秒 SSS 船只噪音干扰鱼儿学习

Boat Noise Means Fish Can't Learn Their Lessons If you've ever gone snorkeling or scuba divingyou know how peaceful it sounds under there... aside from the crackling sound of snapping shrimp. 你如果浮潜或者潜过水，就会知道水下听起来

科学美国人60秒 SSS 别忘了退后一步看问题

Animal Coloration Can Serve Double Duty Nature may be red in tooth and claw. But one plucky caterpillar dresses in orange and black to avoid becoming somebodys lunch. Whats really surprising, though, is that this distinctive set of stripes can serve

科学美国人60秒 SSS 科学合作 无所不能

Worldwide Effort Says Together Science Can Collaboration in science across the world is the key to a better world in the future. Doesnt matter whether its drug resistance or climate change or social inequalities. All of these, I believe, can be broac

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 啤酒发酵跳跃式前进

Beer Fermentation Hops Along The Allagash Brewing Company, in Maine, makes a lot of bottle-conditioned beersbrews that get their carbonation by fermenting a second time, in the bottle, as yeast belch out CO2. And because they do bottle conditioning t

科学美国人60秒 SSS 激光进步改变了我们的生活:诺贝尔物理学奖

Laser Advances That Changed Our Lives: Nobel Prize in Physics This years prize is about tools made from light. The Royal Swedish Academy of Sciences has today decided to award the 2018 Nobel Prize in Physics with one half to Arthur Ashkin for the opt

科学美国人60秒 SSS 通过进化改善生活:诺贝尔化学奖

Better Living through Evolution: Nobel Prize in Chemistry This years prize is harnessing the power of evolution. The Royal Swedish Academy of Sciences has decided to award the 2018 Nobel Prize in Chemistry with one half to Frances H. Arnold for the d

科学美国人60秒 SSS 诺贝尔物理学奖颁给激光控制实验者

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo