Can you ace this genius test? Challenge friends & family!

From rebus puzzles to brain-teasing riddles and quirky quiz games, our love for mental challenges is more than just fun—it’s brain training in disguise. Science shows that solving tricky problems ...

Katia Riddle is a correspondent on NPR's science desk. Prior to her current role, she covered public health including reproductive rights and homelessness. She won a 2024 Gracie Award for a series on ...