How Could Blue Denim Be Greener?

It takes a lot of water and some toxic chemicals to dye our denim blue. Learn how research into chitosan could make the process more environmentally friendly in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/green-tech/sustainable/denim-dyeing.htmSee omnystudio.com/listener for privacy information.