Negative net migration hasn’t definitively happened in the U.S. for almost a century, not since the Great Depression. The U.S. native-born population is also in free fall, well below the replacement rate needed to maintain population numbers in the long run. With fewer immigrant arrivals already dealing a blow to the workforce, the shrinkage of the American taxpayer base is set to further widen the country’s deficit and hurt its prospects for economic growth.
人工智能+：从技术奇点到个体生产力革命
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"It meant it was possible to capture a nearly 180 degree field of view, so you could almost capture them like a string of pearls in the sky."
"That is really important, because that can lead to successive rainfall events, [which] can lead to very saturated soils, and as we're seeing currently in the UK, that can lead to exacerbated flooding as well," she said.
Fermaw’s In-Memory Defences