America's Less Risky Teenagers in Six Charts

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From a decline in teen smoking to fewer fistfights, risky behavior among American high school students has declined across many measures over the past two decades, according to new data from the Centers for Disease Control. Some trends concern public health officials, including an apparent increase in unprotected sex, and new concerns are about texting while driving. Here’s a look at the changes in six risky behavior categories:

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