Teens aren’t getting enough sleep! And a two-decade study suggests it’s getting worse. Scientists found that the number of high schoolers getting insufficient sleep — less than seven hours a night — has increased from 69% to 77%. The throughline? There wasn’t one. Teens had bad sleep habits across most demographics, including race, gender and grade level. <a href="https://jamanetwork.com/journals/jama/article-abstract/2845759"target="_blank" >The findings were published</a> this week in the journal JAMA. Interested in more science behind recent headlines? Email us your question at <a href="mailto:shortwave@npr.org"target="_blank" >shortwave@npr.org</a>. For more about earthquake science – and the Cascadia Fault in particular – check out our <a href="https://www.npr.org/2025/11/25/nx-s1-5607262/oregon-japan-earthquake-pacific-northwest"target="_blank" >recent episode on the Pacific Northwest’s Big One</a>. Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at <a href="http://plus.npr.org/shortwave"target="_blank" >plus.npr.org/shortwave</a>. To manage podcast ad preferences, review the links below: See <a href="https://pcm.adswizz.com">pcm.adswizz.com</a> for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. Learn more about sponsor message choices: <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a> <a href="https://www.npr.org/about-npr/179878450/privacy-policy">NPR Privacy Policy</a>

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