Ecuadorian authorities have been placed on alert after a 1,500-meter column of steam, gas, and ash emanated Sunday from the Cotopaxi volcano, it was reported. The National Polytechnic School's ...

Learn more about these signs of summertime cold, perhaps tied to volcanic activity in 1877 and 1902.

Scientists studying tree rings in northern Norway have linked ‘blue’ rings, caused by cold summers, to volcanic eruptions ...

Cotopaxi volcano is THE iconic peak of Ecuador... similar to Mount Fuji is in Japan. The perfectly symmetrical snow-capped ...

Volcanic eruptions and cold summers leave lasting marks in the wood of northern trees, unlocking the secrets of past climate extremes.