lignite coal black rock with penny

american bedrock big black block blocky brown burns carbon change chute clean climate coal coin combustion copper corporate dioxide dirty electricity energy extracted flammable fossil fuel gas geological geology global heat hydrocarbon hydrocarbons industrial industry investment jet koch lignite lincoln lung metal methane miles millions mining mississippi mississippian money natural objects oil organic organics particles particulates pennsylvania pennsylvanian penny power pressure production resource revolution rock samples sedimentary sink source storage stored sulfur switch technology todays virginia warming years