Environment maps

Autumn foliage colors mapped

Autumn foliage is a phenomenon that changes the green leaves of deciduous trees. By the end of October, yellow, orange, red, and brown varieties dominate, showing the coming of peak fall foliage in the western and northern U.S. When it comes to the end of November, all except the southern counties of the U.S. are past the peak point.

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CitiesTransport

Population Density and Urban Transit In Large World Cities

Population and transportation density identify specific cities. It is one of the most precise measures of how suburbia differs from the central city, and it depicts the most visual contrast between urban areas throughout the world. Although differences exist within the central city and suburbia, differences on a global basis between North American and European cities are even more impressive.

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