Jet streams are often referred to as the "motor" of global weather: High-altitude wind currents steer areas of high and low ...

Every year, billions of birds undertake intrepid journeys between temperate regions in North America and their tropical ...

The cycle swings between warmer and cooler seawater in a region along the equator in the tropical Pacific. La Niña is marked by cooler-than-average ocean water in the region. It is one of ...