Explore the return of sunlight after years of global dimming. Discover how air pollution reduction is affecting sunlight ...

A weakening of Earth’s magnetic field known as the Laschamps event would have increased the threat of solar radiation, ...

The sun rises each day, but the amount of sunlight reaching Earth’s surface is not as constant as we might think. A new study ...

The concentration of carbon dioxide in the atmosphere rose last year at the fastest rate on record. The spike has scientists worried that more and more carbon is coming from natural sources.