Back in 1985, Carl Sagan told Congress that continuing to burn fossil fuels will increase global temperature, cause climate change, melt glaciers and ice sheets, and cause sea level rise.

His solution: Fewer government subsidies for fossil fuels and use of renewable energy.

@davidho Back in those days, the oil and gas industry got a 25 percenty tax break called the "depletion allowance" because...well there wasn't any good reason except their powerful lobby.