In another 250 million years, Americans will be able to drive to Africa. By that time, Earth's seven continents will have merged(?) into one supercontinent, predicts Christopher Scotese, a geologist at the Univers...In another 250 million years, Americans will be able to drive to Africa. By that time, Earth's seven continents will have merged(?) into one supercontinent, predicts Christopher Scotese, a geologist at the University of Texas at Arlington. It won't be the first time the continents have gotten-together; about the same amount of展开更多
文摘In another 250 million years, Americans will be able to drive to Africa. By that time, Earth's seven continents will have merged(?) into one supercontinent, predicts Christopher Scotese, a geologist at the University of Texas at Arlington. It won't be the first time the continents have gotten-together; about the same amount of