第三篇公民科学家
理解大自然对气候变化有怎样的反应需要监视世界各个角落的关键生命周期事件——花开、叶子的出现、第一只青蛙叫出春天的到来。但是生态学家不可能去到世界的各个角落,所以他们向非科学家求助,这些非科学家有时也被称作公民科学家。
气象科学家不可能足迹遍及天下。因为在世界上有如此多的地方,没有足够的科学家来观察它们。所以他们请求你来帮助观察全世界气候变化的迹象。公民科学家运动鼓励普通人根据自己的兴趣来观察某一个特定的方面——鸟儿、树木、花卉等等一一并把他们的观察结果发送到一个巨大的数据库来供专业科学家研究。这有助于数量有限的科学家得到如果只靠他们自己根本收集不到的巨大数据。就像公民记者帮助报道传统新闻报道方式所忽略的小型社区的相关信息一样,公民科学家也对他们所居住的环境很熟悉。所需要的就是每天或每周留出儿分钟来搜集数据并发送过来。
一群科学家和教育家在去年发起了一个叫做纽约国家物候学的组织。“物候学”就是科学家们所说的在自然中研究每个事件的时间。
其中一个小组的首要尝试就是依靠科学家和非科学家来收集关于每年植物开花和长叶子的数据。这一项目叫做花季追踪计划,它收集遍布美国的各种各样的植物生长周期的数据。参与这一项目的人们一一这一计划对所有人开放——把他们的观察记录登录在花季追踪计划网站上。
“人们不需要是植物学家——他们仅仅需要环视四周看看周围有什么。”Jennifer Schwarts说,她是这项计划的教育顾问。“通过收集数据,我们就能够估算出气候变化对植物和生物群落会有怎样的影响。
MOTORING TECHNOLGY
1.2 million road deaths worldwide occur each year,plus a further 50 million injuries.To reduce car crash rate,much research now is focused on safety and new fuels-though some electric vehicle and biofuel research aims at going faster.
Travelling at speed has always been dangerous.One advanced area of research in motoring safety is the use of digital in-car assistants.They can ensure you don’t miss important road signs or fall asleep.Most crashes result from human and not mechanical faults.
Some safety developments aim to improve your vision.Radar can spot obstacles in fog,while other technology“sees through”big vehicles blocking your view.
And improvements to seat belts,pedal(脚踏)controls and tyres are making driving smoother and safer.The colour of a car has been found to be linked with safety,as have,less surprisingly,size and shape.
But whatever is in the fuel tank,you don’t want a thief in the driving seat and there have been many innovations(创新).Satellite tracking and remote communications can also come into play if you crash,automatically calling for help.
Accidents cause many traffic jams,but there are more subtle interplays between vehicles that can cause jams even on a clear but busy road.Such jams can be analyzed using statistical tools.Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyons’s personal chauffeur(司机),but their latest efforts suggest that won’t be soon.
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