dye

By Elizabeth Grossman While commercially manufactured polychlorinated biphenyls (PCBs) were banned by the US Environmental Protection Agency (EPA) in 1979 due to concern about their extreme environmental persistence and toxicity – including potential to cause cancer – current EPA regulations allow the presence of limited amounts of PCBs that occur as manufacturing by-products. These by-product PCBs are not created or added to products intentionally but occur as a result of certain manufacturing processes, among them the synthesis of certain pigments that go into dyes, inks and paints. As I…
"Are we to paint what's on the face, what's inside the face, or what's behind it?" -Pablo Picasso As an animal lover, like others here on scienceblogs, as well as a big fan of Halloween costumes, it's probably unsurprising that a good, creative animal costume will crack me up. Three more turtle dogs and a giant rat will complete the set! Turn your sweet, harmless puppy into the fearsome guardian of Hades by adding two extra heads! Sometimes, you just need to play to your strengths. In this case, it's ridiculous cuteness. Dressing animals like other animals is practically its own artform…