nostr:npub17glms3jhnqputw2sx5z5fl2zetdr99pfa59tfgja7q0n3pu78wnqml8uw2 
“What Is Natural Gas? Hint: It's Not Natural” 
“Like crude oil, natural gas results from the decomposition of plants and animals that died millions of years ago and were buried deep under the earth.” 

Natural in origin…until any refining/cracking occurs.