As such, it is only right that the government and environmental agencies seek methods to reduce greenhouse gas emissions. Hence, the Renewable Fuel Standard was introduced and, as a result, biofuels are now part of our transportation fuel system. Unfortunately, of late, when it comes to tackling greenhouse gas emissions, some state agencies seem to have forgotten about biofuels.

But the numbers suggest it is the most viable solution at hand.

In the Minnesota Environmental Quality Board's (EQB) "Minnesota and Climate Change: Our Tomorrow Starts Today" report, it states that ethanol and biodiesel in our transportation system are projected to reduce CO2 emissions by nearly 874,000 metric tons a year. This, it said, is the equivalent of removing 188,000 cars of the road in Minnesota per year.

The numbers above echo a study from Michigan State University which said ethanol reduces emissions to the equivalent of 294,000 cars annually in Michigan (the figure is higher in Michigan as it has a larger population than Minnesota).

In fact, the Renewable Fuels Association, using Argonne National Laboratory's GREET (Greenhouse gases, Regulated Emissions, and Energy Use in Transportation) model, estimated that ethanol reduced 37.9 million tons of greenhouse gas emissions in 2013 which was the equivalent of removing 7.9 million cars from the road for a year.

Similarly, a joint report from the Minnesota Pollution Control Agency and Minnesota Department of Commerce to the state legislature in 2013 said CO2 emissions from the transportation sector in Minnesota, from 2005 to 2010, had been reduced 10% as a result of an "increase in fuel efficieny and use of biofuels, decrease in energy consumption and in fossil fuel energy."

Considering the points above, it is abundantly clear that the one solution that we have at-hand - that has the best potential - to continue reducing harmful greenhouse gas emissions are biofuels.