Biofuels are worse than gas: an example of environmental assumption failure?

http://www.freep.com/story/news/local/michigan/2016/08/25/u-m-study-biofuels-worse-climate-change-than-gasoline/89265358/

https://drive.google.com/file/d/0B7ZwDXl-m2O9TFFiZXdRLUtsWlU/view

http://www.carsclimate.com/2015/08/bringing-biofuels-back-to-earth.html