NPR News Now covers AI leaders supporting Anthropic CEO Dario Amodei’s call for slowing frontier development, House Speaker Mike Johnson’s response to Trump’s $5,000 check pledge, and the emergency water landing of Wisconsin GOP candidate Tom Tiffany’s plane. The episode also reports on Celine Dion’s return to the stage in Paris after battling stiff person syndrome and the box office success of "Practical Magic 2."