Yellowstone's magma system shows new activity, with the northeast sector possibly hosting future volcanic activity.

My wife and I enjoy hiking off trail and for our bushwhacking adventures, we use a paper topographic map, a compass and a handheld GPSR.

The USGS Hawaiian Volcano Observatory spearheads Volcano Awareness Month each January on the Island of Hawaii. This year, in addition to in-person talks and walks around the island, we hosted an art ...