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More news from the AAAS meeting

Over the past two decades, science literacy — an estimate of the share of adults who can follow complex science issues and maybe even render an informed opinion on them — has nearly tripled in the United States. To a meager 28 percent.

U.S. adults had to answer such questions as What is a stem cell? What is an experiment?  True or false: Nuclear power plants contribute to the destruction of Earth’s ozone layer.