Ecoclimax

SDO's Atmospheric Imaging Assembly captures a shot of the sun every 12 seconds in 10 different wavelengths. The images shown here are based on a wavelength of 171 Angstroms, which is in the extreme ultraviolet range and shows solar material at around 600,000 Kelvin. In this wavelength it is easy to see the sun's 25-day rotation as well as how solar activity has increased over three years.

The Colorado River runs 1450 miles across seven states and two countries supplying water for 36 million people. It flowed to the sea for six million years but has not kissed the ocean since the late 1990s. A video poem to highlight the beauty and challenges of this national icon, American River's Most Endangered River for 2013.

Hong Kong, photos Michael Wolf & Society for Community Organization.