Green Car Congress
FEBRUARY 25, 2014
Asphalt binder, the sticky “glue” that holds crushed stone and sand together to form pavement, only accounts for about 5% percent of the final hot mix asphalt (HMA) that is steamrolled into glossy new lanes and boulevards. In Iowa, for example, scientists are making a corn-based bioasphalt from residue left after the production of ethanol.
Green Car Congress
APRIL 30, 2013
Jerald Schnoor, also a professor in the departments of civil & environmental engineering and occupational & environmental health at the University of Iowa, has written an editorial for the journal in which he calls the Keystone XL pipeline a “ pipeline to nowhere ”. Use of coal, oil, and natural gas has to stop (in that order).
Green Car Congress
APRIL 28, 2011
to 335 L/vehicle kilometer traveled (VKT) for Iowa and from 59 to 214 L/VKT for Nebraska. Water is required for crude oil recovery by water flooding, enhanced oil recovery via steam injection, and steam extraction of bitumen from oil sands and during refining of crude oil to produce gasoline. and from 0.29
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