Pollen posts online match real pollen season levels and show how daily allergies shape views on climate change.

Climate change has inexorably stacked the deck in favor of bigger and more intense fires across the American West over the past few decades, science has incontrovertibly shown. Increasing heat, ...

Ice ages have come and gone, shaping the planet and leaving scientists and historians alike wondering about their causes and ...

A Nor'easter, is a powerful low-pressure system named for its characteristic strong northeasterly winds, bringing heavy rain or snow, experts say.

The Trump administration said Wednesday that the United States was withdrawing from 66 international agreements, including a ...

Sticky, unseasonable warmth stretching across the eastern United States this week will set the stage for a sprawling storm system that threatens to bring thunderstorms and heavy rain — weather more ...