John Sabraw is an artist and professor from Ohio who's devised a unique way of raising awareness of his state's pollution problem.
Using toxic runoff found in the Ohio River region, Sabraw produces his own DIY pigments -- bold yellows and reds that are sourced from the oxidized sludge of abandoned coal mines. A masterful feat of art-meets-science on their own, the paint colors eventually became the basis for a primordially beautiful painting series, bringing light to the ecological dilemma of the river region.