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 vegetation index for 1991, as measured by AVHRR. Data Collected: 1991/01/01-1991/12/31. Animator: Jim Strong (NASA/GSFC), Horace Mitchell (NASA/GSFC). Scientist: Tom Watters (Smithsonian/Air and Space). Platforms/Sensors/Data Sets: NOAA-11/AVHRR, NOAA-9/AVHRR, NOAA-9, 11/AVHRR/NDVI.