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Lead Exposure May Have Lowered The IQ of Half of Americans Since 1940

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Childhood lead exposure in the United States is ubiquitous and much more concerning than previous estimates have suggested, according to a new study. When researchers analyzed leaded gas use from 1940 and combined it with data on blood-lead levels from the mid 1970s, they found more than 54 percent of Americans alive in 2015 had … Read more

U.S. science no longer leads the world. Here’s how top advisers say the nation should respond | Science

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A new data-rich report by the National Science Foundation (NSF) confirms China has overtaken the United States as the world’s leader in several key scientific metrics, including the overall number of papers published and patents awarded. U.S. scientists also have serious competition from foreign researchers in certain fields, it finds. That loss of hegemony raises … Read more