What’s the difference between the two, and what is the reasoning for a different system? The most familiar to us is ...

You may have noticed that meteorologists and climatologists define seasons differently from “regular” or astronomical spring, summer, fall, and winter. So, why do meteorological and astronomical ...

Friday morning, March 20, marks the triumphant return of spring in the Northern Hemisphere. Spring is a glorious, warm season after the harsh cold of winter—filled with light and more sun-induced ...

When will spring get here? That depends on which "spring" you're referring to: astronomical or meteorological.

On March 20, winter officially ends with the arrival of the astronomical spring in the Northern Hemisphere.

After years of little snow across the Chicago area, recent record-breaking snowfall and below-freezing temperatures might seem to contradict scientific reports of winters getting warmer. But climate ...