The Cotopaxi is one of the most active volcanoes in Ecuador. At 5,897 meters above sea level, it is the second-highest peak in the country and together with the Sangay and Reventador volcanoes ...

The 3-kilometre-wide caldera was formed by the collapse of a volcano. Quilotoa is 111 miles (178km) southwest of Ecuador's capital Quito, located in Cotopaxi province. Quilotoa Laguna is one of ...

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

In Norway, scientists have found blue rings in trees that hint at how volcanic eruptions disrupted growth throughout history.