No gambling here: When asked to weigh financial choices, teenagers were more likely to make careful choices than were young adults. David Chestnutt/Ikon Images/Corbis hide caption

itoggle caption David Chestnutt/Ikon Images/Corbis

Ten-year-old Jake Herrera and his Los Angeles team run around the diamond as a warmup for baseball practice. Benjamin B. Morris for NPR hide caption

itoggle caption Benjamin B. Morris for NPR
Rob Donnelly for NPR

Solid friendships can help buffer life's stress. iStockphoto hide caption

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Maggie Starbard / NPR

When researchers at Weill Cornell Medical College scanned teenage brains, they found that the area that regulates emotional responses has to work harder to keep impulses in check. Courtesty Kristina Caudle/Developmental Neuroscience hide caption

itoggle caption Courtesty Kristina Caudle/Developmental Neuroscience

Drivers under 25 are more likely to send text messages and make calls behind the wheel. They're also less able to handle distractions while driving. hide caption

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