Today’s Solutions: June 24, 2026

Close-up of a grey rabbit with ears upright inside a wire cage.

Why hamsters run on wheels, according to 30 years of research

BY THE OPTIMIST DAILY EDITORIAL TEAM In 2014, researchers placed exercise wheels in two natural outdoor settings and left them there. Wild mice found the wheels and ran on them, sometimes for up to 18 minutes at a stretch, with no training and no food reward. The running continued long after all Read More...