This story was originally published by HuffPost and is reproduced here as part of the Climate Desk collaboration. Plastics are everywhere. From the stomachs of deep-sea fish to human feces, Arctic snow to gusts of wind in the remote wilderness, the oil and gas byproduct has, barely a century after it was first synthesized in a laboratory, become a ubiquitous feature of virtually every ecosystem on Earth and every aspect of modern life. It’s also playing a key role in permanently changing the climate of the planet it has come to dominate. Plastics already produce 3.8 percent of the world’s greenhouse gas emissions throughout their lifecycle, roughly double the planet-heating pollution spewed by airplanes.