A mom went into anaphylactic shock from the contrast dye used in her CT scan, causing her to die within 90 minutes of its ...

You made your own colorful dye out of crushed bugs and water ... The shell of the female cochineal contains a vibrant red chemical called carminic acid. Carminic acid's color is pH-dependent. For a ...

“Acid stains and dyes give us some artistic advantages over ... I like this and find many architects who prefer this mottled look over a consistent color that looks more like paint.” ...