'Necklace' Measures Air Pollution

This necklace may pollute your wardrobe, but being mindful of all the pollutants you're inhaling is always fashionable, not to mention beneficial for your health. If you still have your head stuck in the sand about whether emissions coming out of those smoke stacks are harmful to nearby residents, try raising a family in Chicago's Pilsen neighborhood and tell me how your lungs are fairing in 15 years.