Ancient Earth reveals terrifying consequences of future global warming

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	Ancient Earth reveals terrifying consequences of future global warming
	admin
	2019-07-03
发布年	2019
语种	英语
国家	国际
领域	地球科学
正文(英文)	As the world’s glaciers melt, Perito Moreno glacier in Argentina is a rare exception. But for how long? Manuel Sulzer/Getty By Graham Lawton WELCOME to Icehouse Earth. It may not feel like it but, right now, our planet is in an ice age. It started about 2.6 million years ago and, until recently, showed little sign of letting up. In the 1970s, scientists were even worried that we were about to plunge into another full-blown icy spell. Today, those fears have evaporated into a fog of greenhouse gases. Unless we do something, fast, the exact opposite is going to happen. If emissions continue to accumulate in the atmosphere, Earth will blow its cool, with potentially disastrous consequences for humanity and the living world. As the climate hots up, so does the race to understand what really happens when we crank up the thermostat. The standard approach is computer modelling, but we need every insight we can get, which is why some climatologists are turning their attention to the deep past, searching for global warming events to help predict the future. The good news is that the biosphere has endured some very hot periods and lived to tell the tale. The bad news is that the next hothouse may be more extreme than anything Earth has experienced before. In which case, it really is goodbye, cool world. Advertisement The earliest inklings that Earth’s climate was radically different in the past came in the 1800s, when geologists were stumped by phenomena such as glacial deposits and desert sandstones at temperate latitudes. In the early 20th century, the theory of continental … Continue reading Subscribe for unlimited digital access Subscribe now for unlimited access Digital Unlimited web access New Scientist app Videos of over 100 science talks available exclusively to subscribers SUBSCRIBE AND SAVE Print & digital Unlimited web access Weekly print edition New Scientist app Videos of over 100 science talks available exclusively to subscribers SUBSCRIBE Existing subscribers, please log in with your email address to link your account access. Quarterly by Direct Debit Inclusive of applicable taxes (VAT)
URL	查看原文
来源平台	NewScientist
文献类型	新闻
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/136379
专题	地球科学
推荐引用方式 GB/T 7714	admin. Ancient Earth reveals terrifying consequences of future global warming. 2019.