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科学美国人60秒:创造新物质-托福听力下载

2017-01-18 18:10:00来源：科学美国人60秒

点击查看>>科学美国人60秒音频：创造新物质

　　科学美国人60秒中英文翻译：创造新物质

　　科学美国人60秒英文文本

　　Humanity inscribes itself into the rock record of Earth's history.

　　People now move more sediment than all the world's rivers combined.

　　Fossil fuel burning has changed the composition of the atmosphere.

　　Everywhere are traces of the sudden appearance of rare radioactive elements like plutonium, a legacy of nuclear weapons.

　　And now there's even a new type of rock—that people brought into existence.

　　Geologists found the novel stone on the beaches of Hawaii.

　　人类影响地球.jpg

　　Its constituents include solids of volcanic origin, sand, shells and, yes, plastic.

　　The discoverers dubbed the material plastiglomerate.

　　The finding is in the journal GSA Today, published by the Geological Society of America.

　　People's campfires on the beach inadvertently helped create plastiglomerate.

　　Some plastic, from a soda bottle, fishing line or a plethora of other possible polymeric sources, found itself near the fire and melted.

　　The resultant sticky goo cemented all the disparate bits together.

　　The new substance appears to be persistent, destined to stick around for a long, long time.

　　And that's the kind of techno-fossil that may prove to be a hallmark of the Anthropocene age, this time of humanity shaping the planet.

　　中文翻译请点击下一页

本文关键字: 科学美国人60秒 科学60秒下载 托福听力

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