By Miriam Raftery

Photo:  Los Angeles smog in 1972, before the current standards; photo by Gene Daniels, public domain via Wikimedia.

March 18, 2017 (Washington D.C.) — California has threatened legal action after President Donald Trump ordered the Environmental Protection Agency to abandon strict fuel efficiency standards for vehicles and rules that limit emission of greenhouse gasses.

E - The Environmental Magazine

Dear EarthTalk: I thought that putting ethanol in our gas tanks was going help fight climate change, but lately I’ve heard reports to the contrary. Can you enlighten?       -- Bill B., Hershey, PA

Ethanol and similar “biofuels” made from corn and other crops seem like a good idea given their potential for reducing our carbon outputs as well as our reliance on fossil fuels. But recent research has shown that the federal government’s push to up production of corn-derived ethanol as a gasoline additive since 2007 has actually expanded our national carbon footprint and contributed to a range of other problems.