#geochromadata

Harold Fisk's 1944 alluvial maps of the Lower Mississippi River Valley for the Army Corps of Engineers. There were 15 giant plates in total, tracing the meanders and oxbow bends of the Mississippi back hundreds of years.

Daniela Augenstein, a spokeswoman for Berlin's department of urban development, explained that each side historically used different streetlights. The lights themselves reflect another difference: The streetlamps used in West Germany were much more environmentally friendly, reflecting the emergence of the western German environmental civil movement in the 1970s and 1980s. At that time East Germany was still heavily polluting, and heavily reliant on coal. Today, eastern Germany is the heart of the country's renewable energy transformation. But viewed from space, the historic differences still define Berlin's nightly appearance.