This is one of a series of animations that were produced to be part of the narrated video shown in the HoloGlobe exhibit at the Smithsonian Museum of Natural History and the Earth Today exhibit at the Smithsonian Air and Space Museum. Note: Global volcano activity from 1960 through 1995. Active volcanoes are shown as red triangles, with brightness denoting the activity level. Animator: Jim Strong (NASA/GSFC). Scientist: Tom Watters (Smithsonian/Air and Space). Platforms/Sensors/Data Sets: Global Volcanism Program.