glut worse(better and more wisely selective computer information retrieval is needed). In the meantime, those who try to keep up tend to feel a little like Alice, running very hard with the Red Queen just to stay in one place. The technology epidemic also makes it hard to think wisely about the effects this technology is having now, and will have in the future.OK. But we can't escape to a nice ...
which are, of course, reptiles). Even the amphibians that waddled went fest if they needed to-which is apparent if you try to catch a salamander bent on escape. Furthermore, amphibians have reasonably good lungs, although many can breathe through their skins, too, have efficient three-chambered hearts, and may live longer than many small mammals.While contemplating the history of amphibians ...
to by several horror movies. While it is true that poisonous spiders can be dangerous, they don't go after people who try to avoid them. And spiders are small. Even the biggest tarantula (capable of capturing and eating a bird) is no larger than 26 centimeters(10.4 inches), including its legs.Only four groups of animals are true "builders" — spiders, insects, birds and Homo sapiens sapiens. ...
Australia. Sheep can now be sheered in 17minutes, which is presumably better for the sheep as well as the wool industry.Michael Ali is a graduate student at New York State Center for Advanced Technology in Automation and Robotics (try that in a school song). He's devised a robotic hand so similar in shape and activity to ours that it's easy to learn to use. Operated at a distance, the robot ...
happens with each increment of temperature. Such a course is, of course, fraught with uncertainties.Another way is to try to create a submicroscopic piece of cosmic soup and see what happens. One way to do this is to smash together heavy particles. In pushing together, they may create the cosmic soup.Peter Levai and Berndt Miller of Duke University decided that if a cosmic soup were in this ...
가위 엄청난 것이었다.The job of a volcanologist, like Jonyon Ousaka at Tamagawa University in Japan, is to try to predict when a volcano will erupt.A volcano may seem to be dead. After it has finished erupting, lava may collect in the crater and form a plug that will seem to keep the volcano from ever erupting again. This, however, is a matter of false confidence. Somewhere deep in ...
and how old the universe might be.The way to do that is to start with objects that are fairly close to us, and then try to estimate from that how far other more distant objects are, and from that the distance of still farther objects, and so on.The trouble is that in going from one set of objects to another more distant set, astronomers have to make certain assumptions and they can never be ...
t be. It might do this so rarely that scientists, not watching for it, would never notice.For that reason, scientists try to calculate what might happen if the exclusion principle were violated. Certain events would occasionally happen in certain "forbidden" ways, giving off radiation that should not be given off. They therefore design very careful experiments in which a very occasional bit of ...
morsel and tries to swallow it. Almost immediately, the bird drops what it has not consumed and is clearly sick, trying to get rid of the taste in its mouth. Such a bird never tries to eat a monarch again. one experience is enough.The result is that monarchs - at the cost of loss per bird – are safe from predation, at least that kind of predation.In fact, there is another butterfly called ...
assumptions and equations on paper may not be enough. It may be useful to attempt a more direct attack--to actually try to create a universe by gravity alone and see what happens. Naturally, this cannot be done in reality. However, the correct programming might allow a computer to simulate the construction of a universe. This is what park tried to do. He presented his results in February.Park ...