Map showing the current distribution range of the two wildebeest species, the blue wildebeest and the black wildebeest, based on IUCN distribution data. Map prepared by Laura D. Bertola. Image may ...

The term “choropleth” refers to maps that use color or shading to visualize a given measurement. In this case, the map uses either the color red or blue to indicate which party won a given county.

Blue has political roots in the conservative party of Great Britain. The cool color is often viewed as more “subdued” than warm colors, and, because of the structure of our eyes, appears farther from ...

The blue counties on the map are simply the ones that remained after the Democratic base in Texas melted away over the 20th century. See a larger version of the 1940 map.

The distribution of race in metro Birmingham is clear in the map, with over-the-mountain communities represented by a sea of blue dots, representing white residents, and the city by a sea of green ...