When we think of plastic pollution, we think of images of plastic bags on the beach, suffering marine life and the almost invisible smog of microplastics in our ocean. What often gets overlooked is the fact that conventional plastic is made from fossil fuels, and is a product of the oil and gas industry.
Traditionally made from petroleum byproducts, plastic in the U.S. is now most commonly sourced from the nation's production of "abundant and affordable" natural gas. Natural gas liquids (NGLs) ethane and propane get extracted and sent to a "cracking facility" where ethane is made into ethylene (the foundation of polyethylene—the most common plastic in the world, frequently used for packaging, bottles and synthetic clothing), and at a dehydrogenation plant, propane is made into propylene (the foundation of polypropylene—a plastic commonly found in food packaging and vehicle manufacturing).
"The reason is simple: because of shale gas, it is more cost effective to produce ethylene in U.S. than just about anywhere else in the world."