Workers in Oakland, Calif., check the damage to Interstate 880 on Oct. 19, 1989; this portion of the freeway had collapsed during the Loma Prieta earthquake two days earlier.
Puddled meltwater very likely primed this ancient edge of the Antarctic's Larsen Ice Shelf to rapidly disintegrate over just several weeks. This view of the splintered mix of frozen bergs is from a Feb. 21, 2002, satellite image.
Landsat 7 Science Team/NASA/GSFC
This map from the NOAA Environmental Visualization Laboratory shows the amount of heat energy available to Typhoon Haiyan between Oct. 28 and Nov. 3. Darker purple indicates more available energy. Typhoons gain their strength by drawing heat out of the ocean. The path of the storm is marked with the black line in the center of the image.
NOAA Environmental Visualization Laboratory