Scientific American-60 Second Science 科学美国人-60秒科学是科学美国人网站下的一套广播栏目,开办于2006年,内容以科学报道为主,用仅仅一分钟的时间对当今的科学技术新发展作以简明、通俗的介绍,对于科学的发展如何影响人们的生活环境、健康状况及科学技术,提供了大量简明易懂的阐释。以生动、有趣的事例展现了生活中的科学,富于趣味性!
Scientists analyzed around 2,500 of those calls, and found that the second part (sound) is nearly identical in pitch every time from each whale: 16 hertz, or four octaves below middle C. And the slight variations in frequency that do exist are only a...
One of the concerns about working with genetically modified crops has been that vegetation growing in agricultural fields might escape out into the world. Now, for the first time in the U.S., researchers report a large population of GM crops beyond t...
Frog census volunteers misinterpreted recorded frog sounds in the field, leading researchers to suspect that frog populations may be even lower than thought. Declining frog populations are considered an indicator of environmental damage. But new rese...
Rats with high blood pressure benefited from a long-term diet rich in capsaicin, which gives the heat to hot peppers and starts a chemical sequence that relaxes blood vessels. Heres a possible blood pressure remedy. But its only for those who can sta...
Male and female actors gave physics lectures to college students. All students thought the males were more knowledgeable. And whereas female students gave a a slight nod to women teachers, male students thought male teachers were vastly better. Why a...
The Mars Rover Spirit has long surpassed its planned three-month mission, and appears to be virtually powerless. Researchers still hope that once the Martian days lengthen, the rover's batteries may charge up to the point where communication again be...
High-end goods with recognizable logos may signal to the less affluent that you have some money, but also to the wealthy that you're not one of them Some people pay big bucks for a designer handbag or a luxury carand the distinctive logo that goes al...
The evolutionary development of the neck allowed more freely moving forelimbs, which allowed further evolution of the head and hands Whats in a neck? Well, its a good place to hang a pendant or a tie. Or to rest your head. Now scientists say that by...
People with a particular variant of a dopamine receptor were more likely to drink more after watching other people drink heavily Spend any time in a bar, and sooner or later youll hear, Ill have what shes having. It sounds like a bad pickup line, but...
People initially expect to learn a new skill easily, then become overly pessimistic when reality sets in. Have you ever bought a new electronic device, or tried a new activity, and then dropped it because you were sure you couldnt possibly master it?...
Frogs from an ancient lineage reveal that the amphibians developed the ability to jump before they had mastered landing Youd think an animal that hops would know how to land. But for a kind of frog, thats not the case. Imagine trying to catch a frog....
A hypervelocity star appears to be the remains of a three-star system, one star of which was digested by the Milky Way's black hole, with the other two being combined and hurled away. Heres what scientists think happened, oh, about a hundred million...
A caterpillar's guts move forward first, followed by its outer body, according to x-ray studies of the insects walking on a treadmill. Imagine if before you took each step, your guts lurched up into your throat. Well, caterpillars dont have to imagin...
Two studies of perception: the retinas of depressed people are far worse at responding to contrast; people doubt statements more when the speaker has a foreign accent. A couple of studies on perception. First, theres now visual data to back up the id...
A study of all injuries resulting in Major League Baseball players being put on the disabled list finds that most injuries occur before the All-Star break, and that pitchers are more at risk than non-pitchers. New York Yankees pitcher Andy Pettitte h...