October 6, 2010
See the full article:
https://grist.org/article/2010-10-07-bike-trail-being-paved-with-asphalt-made-f…
Bioasphalt® developed by Iowa State University's Christopher Williams and produced by Avello Bioenergy Inc., a company started by three Iowa State graduates, will be tested on a Des Moines bicycle trail. Williams said asphalt mixtures derived from plants and trees could replace petroleum-based mixes. And that could provide markets for Iowa crop residues and business opportunities for Iowans.