A bill introduced last year to encourage the use of "clean fuels" has environmental and animal activists concerned about its potential impacts. Environmentalists say Senate Bill 275 would incentivize reliance on biofuels, which could lead to more Concentrated Animal Feeding Operations (CAFOs), also known as "factory farms" in the state. This week on MichMash, Gongwer News Service's Zach Gorchow dives into this under the radar issue with Oakland County physician and activist Dr. Cheryl A. Ruble. Also, Zach sits down with Gongwer staff writer Elena Durnbaugh to discuss a new approach to fixing the roads in Michigan.