Alpine marmots, Hohe Tauern National Park, Austria

A shadow's promise. Groundhog Day

Every February 2, the world turns its eyes to a furry little forecaster with a penchant for popping out of holes: the groundhog. Legend has it that if this pint-sized predictor sees its shadow, winter drags on for six more weeks. No shadow? Spring is just around the corner. It's a quirky tradition that turns a small rodent into a celebrity meteorologist.

Groundhog Day has its roots in an old European custom in which a hedgehog or badger would predict the weather. When German immigrants came to Pennsylvania, they passed the forecasting torch to the local rodents, giving rise to Punxsutawney Phil—the most famous groundhog of them all. Each year, thousands gather in Punxsutawney, Pennsylvania, to witness Phil's prediction, while millions watch from home, hoping for an early spring.

Across the Atlantic, the idea of reading the seasons through wildlife has its own twist. In the Alps, people watch for Alpine marmots, seen in today's image. After a long winter nap, these mountain dwellers emerge from their burrows into the light, often signaling warmer days ahead. They never get an official 'shadow ceremony,' but their timing acts as nature's quiet calendar in high-altitude communities.