Volcán de Fuego in Guatemala erupts frequently compared to many volcanoes. Ash and gas often rise from its crater. This makes it one of the most watched volcanoes.

Arizona has 24 national parks and monuments. Here are the 12 must-see national parks and monuments in Arizona and how to visit each of them.

New seismic imaging shows magma lingering beneath quiet Cascade volcanoes, shaping how scientists monitor and plan for ...