The dye industry, heavy on the use of petrochemicals, is one of the world’s biggest polluters. Now dyes can be made by microorganisms that -grow- colors.
The dye industry, heavy on the use of petrochemicals, is one of the world’s biggest polluters. Now dyes can be made by microorganisms that -grow- colors.
I take it as shorthand for “without known harmful chemicals, probably, also, we think you’re an idiot”.