Clean fuels, by one or another name, are not quite the same. But with so many different clean diesels on the market, it can be difficult to distinguish the...

Electric and natural gas vehicles are the most well-known alternatives to diesel, but here’s a look at other alternative fuels that may be in the running...

The California Air Resources Board has opted to “readopt” a Low Carbon Fuel Standard that requires a 10 percent reduction in the “carbon intensity of...