Every winter, millions of people brace for news about the polar vortex - that vast, spinning mass of frigid Arctic air high in the stratosphere that occasionally escapes its usual boundaries and ...

Global climate models capture many of the processes that shape Earth's weather and climate. Based on physics, chemistry, fluid motion and observed data, hundreds of these models agree that more carbon ...

Nearly every part of the United States is getting walloped by wild weather or just about to be. Days of downpours have begun in Hawaii. The Southwest will soon bake with day after day of record ...

The polar vortex isn’t just “cold air” — it’s a massive atmospheric engine that can shift and crack, sending brutal winter outbreaks far from the Arctic. This decade, scientists warn its behavior ...