For many people who lived through the 1980 eruption of Mount Saint Helens, it is the biggest news story of their lifetimes.

If this hot debris is deposited on snow and ice, it causes melting and generates lahars (volcanic mudflows) that may deposit debris miles away from the volcanic vents. The largest eruption in the ...

issued a Red Alert for Poás Volcano National Park, closing it since March 26. Grecia and Sarchí are under orange alert, while Alajuela, Poás, and Zarcero face yellow alert due to ashfall and risks of ...