A strip of cool water stretches west from South America along the equator, helping set the pace for some of the planet’s most important weather swings. That Pacific “cold tongue” helps steer the El ...

The annual clock of the seasons—winter, spring, summer, autumn—is often taken as a given. But our new study in Nature, using a new approach for observing seasonal growth cycles from satellites, shows ...

For centuries, Earth’s seasons were assumed to follow a shared, predictable rhythm. Spring arrived, summer peaked, autumn faded, and winter reset the cycle. But two decades of satellite observations ...

The seasons are a powerful force in our lives. They affect the activities we do, the foods we crave, the clothes we wear — and quite often, the moods we are in. The seasons officially change once ...

We wouldn't blame you for taking Earth's four seasons for granted. Spring, summer, fall, and winter have been regularly calling the shots on what we wear, what time we wake up, and how much rock salt ...