The Cube consists of one pound of solid graphite, which represents the amount of carbon dioxide the average car emits every mile.
Carbon dioxide is an invisible gas, impossible to handle or to see. I've always thought that this was a big reason we have such a hard time dealing with greenhouse gas pollution. People who would never think of dumping five pounds of untreated sewage into a river habitually send literal tons of greenhouse gases and other airborne toxics into the atmosphere for their daily commute.
But the Cube changes that with its tangible and surprising heft. Put one on your dashboard and think of sending one more of its clones into the clouds with every click of your odometer. I'll bet you'd become a more efficient driver.
Learn more or order your own cube here.