In April 1988 gas cost $.91 per gallon in the U.S. and the median price of an existing home was $90,60. Although, real GDP adjusted for inflation increased by 95% between April 1988 and April 2015, U.S. electricity power plant CO₂ emissions were still at approximately 1988 levels. Continue reading U.S. power plant CO2 for April is the lowest in 27 years – GDP up 95% →