Plants Could Pave The Way For Greener Roads
25th May 2015
Asphalt contains bitumen, a product of the oil-refining process. But some scientists and engineers believe that they could get the same results by using lignin, a compound found in all kinds of plants. Lignin is strong: it binds together material in trees. It is also plentiful, and currently discarded as a waste product in the process of making paper.