
some with different data formats. Where geologic
categories were described differently, like “Basin
Material, Rugged” vs. “Material of Rugged Basin
Terrain,” I combined closely related terms into a
single color. Also, the geologic timescales weren't
precise, so I decided to omit timescale data. The
map features are colored by geologic category
(craters, basins, etc.) and not by age.
ANIMATED EARTH
This uses open-source code and data from NASA,
USGS, and Natural Earth. NASA publishes many
beautiful Earth datasets at monthly time scales,
and this GIF uses one frame per month to show
the fluctuating seasons, focused mainly on data
about vegetation ...