https://ift.tt/2wwdHAe The Earth’s Shell Has Cracked, and We’re Drifting on the Pieces Geology, Planets, Oceans and Seas Plate tectonics helped make our planet stable and habitable. But slow peregrination of continents is still a mysterious process. NATALIE ANGIER https://ift.tt/2rEWSOk December 18, 2018 at 05:30AM
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