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 ...

There used to be a reliable rhythm to the year. Winter arrived, stayed its course, and gave way to spring. Summer built slowly, peaked, and retreated. For most of recorded human history, this cycle ...

Pumpkin spice, cooler nights, football weekends and clock changes: fall is on the horizon. But the official start of autumn isn’t about lattes or leaf piles. It comes down to astronomy. When does fall ...

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 ...