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Surprising ways the changing Earth shaped human evolution and society | |
admin | |
2019-04-16 | |
发布年 | 2019 |
语种 | 英语 |
国家 | 国际 |
领域 | 地球科学 |
正文(英文) | ![]() Photo by Picfair/Jed Pearson of sculpture by Antony Gormley HUMANITY today is actively reshaping the planet. Our appetite for natural resources and large-scale industrial activity is eradicating species, warming the oceans and disrupting the global climate on an unprecedented scale. So profound is our impact that some have called for the times we live in to be declared a new geological period: the Anthropocene, the age of humanity. But this ability to shape our environment on such a scale is a recent phenomenon. For most of our history, it is our environment that has shaped us. The physical features of the planet we live on enabled our species to arise, nurtured our remarkable brains, facilitated our spread across the planet and even encouraged the birth of the first cities. This is the remarkable story of the way Earth has moulded humanity, and how we have turned the tables to shape the world.
AdvertisementHow we emergedSome 55.5 million years ago, Earth’s thermostat did something unexpected. In the space of 100,000 years, barely the blink of an eye on geological timescales, the temperature of the planet jerked up by between 5°C and 8°C, hovered for a bit, and then came back down. This brief planetary fever was hugely disruptive to life on Earth, driving the rapid evolution and divergence of whole new orders of animals, including our own. The principal culprit is thought to have been methane. As a powerful greenhouse gas, its presence in air makes our atmosphere trap more of the sun’s heat … Article amended on 26 April 2019We clarified that the sculpture of a human figure is by Antony Gormley |
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来源平台 | NewScientist |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/133327 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | admin. Surprising ways the changing Earth shaped human evolution and society. 2019. |
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