案例简介：乔治·斯坦梅茨 (George Steinmetz) 的照片 @ geosteinmetz | 在思考人口的爆炸性增长时，退后一步并在地球深处的背景下考虑它是很有用的。Richat结构是经过撒哈拉沙漠的宇航员熟悉的地标，对地质学家来说仍然是一个谜。最初被认为是陨石撞击，现在已知它是一个具有一亿年历史的火山结构，风化到目前的形式。宇宙碰撞和火山痉挛是行星时钟的滴答声，但留下了持久的疤痕。我们激增的人口也会这样吗？要从上面探索更多我们的世界，请关注 @ geosteinmetz。

案例简介：Photo by George Steinmetz @geosteinmetz | When pondering the explosive rise of human population, it’s useful to step back and consider it in the context of deep Earth time. The Richat Structure is a familiar landmark to astronauts passing over the Sahara, and remains something of an enigma to geologists. Originally thought to be a meteorite impact, it is now known to be a hundred-million-year-old volcanic structure that weathered away to its current form. Cosmic collisions and volcanic spasms are ticks of the planetary clock but leave enduring scars. Will our surging population do the same? To explore more of our world from above, follow @geosteinmetz.

国家地理 - Photo by George Steinmetz @geosteinmetz | When pondering the explosive rise of human population, it’s useful to step back

案例简介：乔治·斯坦梅茨 (George Steinmetz) 的照片 @ geosteinmetz | 在思考人口的爆炸性增长时，退后一步并在地球深处的背景下考虑它是很有用的。Richat结构是经过撒哈拉沙漠的宇航员熟悉的地标，对地质学家来说仍然是一个谜。最初被认为是陨石撞击，现在已知它是一个具有一亿年历史的火山结构，风化到目前的形式。宇宙碰撞和火山痉挛是行星时钟的滴答声，但留下了持久的疤痕。我们激增的人口也会这样吗？要从上面探索更多我们的世界，请关注 @ geosteinmetz。

国家地理 - Photo by George Steinmetz @geosteinmetz | When pondering the explosive rise of human population, it’s useful to step back

案例简介：Photo by George Steinmetz @geosteinmetz | When pondering the explosive rise of human population, it’s useful to step back and consider it in the context of deep Earth time. The Richat Structure is a familiar landmark to astronauts passing over the Sahara, and remains something of an enigma to geologists. Originally thought to be a meteorite impact, it is now known to be a hundred-million-year-old volcanic structure that weathered away to its current form. Cosmic collisions and volcanic spasms are ticks of the planetary clock but leave enduring scars. Will our surging population do the same? To explore more of our world from above, follow @geosteinmetz.

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国家地理 - Photo by George Steinmetz @geosteinmetz | When pondering the explosive rise of human population, it’s useful to step back

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