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The youngest senator in Congress, and one of its toughest crusaders against Big Tech, proposed a bill Tuesday meant to curb social media addiction by regulating the techniques that prolong engagement on the platforms. Freshman Sen. Josh Hawley’s bill, the Social Media Addiction Reduction Technology (SMART) Act, would make it illegal for social media companies such as Instagram, Twitter and Snapchat to use infinite scroll, autoplay video or techniques like Snapchat’s “streaks,” which reward a user with badges for repeated use. (Mettler, 7/30)

Artificial intelligence is poised to alter care in many medical specialties over the next several years. But few doctors are likely to see as much change as cardiologists, whose practices are already shifting with the use of algorithms to monitor patients’ hearts and produce reams of personalized data. These data can be used not only to detect troublesome heart rhythms, but also to predict future life-threatening heart problems and inform treatment decisions that may head off those episodes. (Ross, 7/31)