Ray Dalio, a billionaire investor, says wealth inequality is a national emergency. Web Summit via Getty Images hide caption
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An area surrounded by rare earth refineries on the edge of China. ED JONES/AFP/Getty Images hide caption
In rugged, rural areas, patients often have little choice about how they'll get to the hospital in an emergency. "The presence of private equity in the air ambulance industry indicates that investors see profit opportunities," a 2017 report from the federal Government Accountability Office notes. pidjoe/Getty Images hide caption
Stocks fell sharply on Wednesday amid troubling economic data that could signal a global recession. Richard Drew/AP hide caption