New understandings of how our brains develop are changing how the law considers who is mature and who isn’t. But If our brains are still developing, when can the law treat us like adults?  Guest: Jane C. Hu, independent science journalist. Host: Lizzie O’Leary If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next TBD. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices