Energy

Arbuscular mycorrhizal fungi live in symbiosis with plant roots and are able to store up to 70 percent of organic carbon from leaf litter. (Mark Perkins/Flickr)

Northern White Sand mine, North Utica, Illinois. Aerial images taken with the assistance of the non-profit pilot collaborative LightHawk. (Ted Auch/FracTracker Alliance, June 2016)

The Smoky Hills Wind Farm as seen from Interstate 70 in Lincoln, Kansas. (Drenaline/Creative Commons)

A sampling of political third party logos: Green Party (top left), Constitution Party (center left), Patriot Party (center right), Pirate Party (top right), Socialist Party (bottom left), Libertarian Party (center left), New Whig Party (center right), and Justice Party (bottom right). (Democracy Chronicles/Creative Commons)