Global seismicity map - Seismicity of the Earth 1900-2010 (via USGS)
On the edge of the Kalahari Desert in Namibia, sand dunes are encroaching onto once-fertile lands in the north. Healthy vegetation appears red in this image; in the center, notice the lone red dot. It is the result of a center-pivot irrigation system, evidence that at least one optimistic farmer continues to work the fields despite the approaching sand.This is a false-color composite image made using near infrared, red, and green wavelengths. The image has also been sharpened using the sensor’s panchromatic band. (via earthobservatory)
Fjords and glaciers (via ESA)
Ganges’ dazzling delta (via ESA)
Long term progression of changing global surface temperatures anomalies (1888-2008) and Global land-ocean temperature index (1880-2010). (via NASA/2)
A time-series of the global distribution and variation of the concentration of mid-tropospheric carbon dioxide (via NASA)
This is clear.