Are there more environmentally-friendly alternatives than polyurethane foam insu...

bluthru · on March 16, 2014

This looks pretty interesting: http://www.ecovativedesign.com

markvdb · on March 16, 2014

Boron treated paper. One popular EU make is Isofloc.

When building new, you may also want to consider straw bale construction. https://en.wikibooks.org/wiki/Straw_Bale_Construction is slowly improving.

dredmorbius · on March 16, 2014

Cellulose, rock wool, and fiberglass all come to mind. Jeans would be cellulose.