A new study shows eruptions and wildfires altered the upper atmosphere, yet recent surface warming points elsewhere.

Rebuild the city of Pompeii and climb the social ladder. Roman society is full of intrigues that you have to solve in order to become a powerful ruler.

Discover why Mount Rainier is considered the most dangerous volcano in the United States. This video explores its eruption history, massive glaciers, lahar risks, and the millions of people who could ...