SSS 2008-06-05
时间：2019-01-08 作者：英语课 分类：Scientific American(六)月
This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute.
Biologists, traditionally track migrations 2 by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted with radio collars, at least not without making them feel self-conscious and absurd.It's not exactly Big Brother. But if you have a cellphone, scientists in Boston may be watching you, or at least, using your cellphone records to see where you go. Because people carry and use their phones every day, they provide a great way for researchers to get a handle on human migration 1. The Boston scientists looked at records from 100,000 cellphone users over a 6-month period. And they pinpointed 3 people's positions based on which transmission towers handled their calls. They found that humans truly are creatures of habit: they tend to make regular trips to the same few locations like work, home, or the local Pizza place. The results appeared in the June 5th issue of the journal Nature. Getting a good fix on people's comings and goings could help predict traffic patterns, or even prevent epidemics 4.Those same phone records show that Ray’s famous original pizza is clearly the human's first choice.
Thanks for the minute for Scientific American's 60-Second Science, and I am Karen Hopkin.
- Swallows begin their migration south in autumn.燕子在秋季开始向南方迁移。
- He described the vernal migration of birds in detail.他详细地描述了鸟的春季移居。
- It foundered during the turmoils accompanying the Great Migrations. 它在随着民族大迁徙而出现的混乱中崩溃。 来自辞典例句
- Birds also have built-in timepieces which send them off on fall and spring migrations. 鸟类也有天生的时间感应器指导它们秋春迁移。 来自互联网
- His refusal to help simply pinpointed his cowardice. 他拒绝帮助正显示他的胆小。
- Computers pinpointed where the shells were coming from. 计算机确定了炮弹发射的位置。