Kilauea, Hawai'i
Like clockwork, Kilauea's nearly 30-year eruption continues onward. This NASA image (above) shows the degassing Halema`uma`u summit crater nested inside the summit caldera. Kilueua has been in the news recently because of a small earthquake swarm that is occurring near the boundary between Kilauea and Mauna Loa - a common location for tectonic earthquakes - however, sometimes these earthquake swarms also herald a change in the eruptive behavior of the East Rift Zone. No changes have been noted so far, but always well worth watching.
Image: Kilauea seen on February 15, 2012 / NASA