Scientists have discovered that peculiar "blue rings" in wood samples reveal the aftermath of chilling volcanic eruptions that disrupted growing seasons over a century ago. When summers turn ...

This is one of the most dangerous areas on the planet due to its volcanic activity ... flowed down the side of the volcano in an intense blue, a very strange and unusual phenomenon.

“High levels of volcanic gas and strands of volcanic glass are among the hazards,” the NPS warned. “Eruptive activity can change at any time.” Strands of volcanic glass, known as Pele’s ...

In the frigid landscapes of northern Norway, an unusual phenomenon etched into the rings of trees and shrubs has offered a glimpse into the Earth's climatic history. Scientists have discovered ...