40 short years ago, the same scientists clammering about global warming, now just "climate change" conclusively stated that we would be in an ice age at this point in time. The climate is always changing and has been since the dawn of time primarily and almost exclusively without human input. Petroleum products are in every facet of our lives from computers, to pharmaceuticals, to household items, etc, etc... not just the gas tank. Modern society, not just world markets, would collapse without fossil fuels.