The discovery ends speculation that ISIS could have acquired it.

The iconic Apollo 8 image of our Earth rising over a barren moonscape taken in 1968 started the environmental movement by revealing the fragility of our home in the vastness of an implacable universe.

Are these technological solutions to some of the damage humans have done to ourselves and the natural world, or are they just versions of Castle Bravo and the Oxygen Destroyer, escalations of a self-destructive technological death spiral?

Since 2010, a landfill fire has been moving toward 8,700 tons of unlined illegally dumped radioactive waste in Bridgeton, Missouri. The site is in the middle of working-class neighborhoods, right next to the Saint Louis airport, and near a hospital, schools and a great number of businesses.

The safe storage of nuclear waste has a long history, dating back to World War II. On February 14, the Waste Isolation Pilot Plant facility near Carlsbad, New Mexico, admitted that it had its first radiation leak in 15 years.