The seasonal Monsoon rains in Pakistan this summer have been extraordinarily heavy. Entire villages have been washed away, over a thousand people have died, and some 2.5 million people are affected by the resulting floods. Lack of safe drinking water and fears of a cholera outbreak are now big concerns. Above, NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite captured the image at left on August 1, 2009, and the image at right on July 31, 2010. Both show the Indus River in northwestern Pakistan. View them in large format here.