T his second wave saw more migration to coastal cities of California, Oregon, and Washington. Oklahoma lost 23,300 African Americans, 14 percent of its black population, while the state of California gained 338,000. In 1930, there were slightly over 50,000 African Americans living in California's major cities.
Rising seas could affect three times more people by 2050 than previously thought, according to new research, threatening to all but erase some of the world’s great coastal cities.The authors of a paper published Tuesday developed a more accurate way of calculating land elevation based on satellite readings, a standard way of estimating the effects of sea level rise over large areas, and found that the previous numbers were far too optimistic. The new research shows that some 150 million people are now living on land that will be below the high-tide line by midcentury.
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