ProPublica is a Pulitzer Prize-winning investigative newsroom. Sign up for The Big Story newsletter to receive stories like this one in your inbox . Last year, I became obsessed with a plastic cup.

It was a small container that held diced fruit, the type thrown into lunch boxes. And it was the first product I’d seen born of what’s being touted as a cure for a crisis. Plastic doesn’t break down in nature.

If you turned all of what’s been made into cling wrap, it would cover every inch of the globe . It’s piling up, leaching into our water and poisoning our bodies . Scientists say the key to fixing this is to make less of it; the world churns out 430 million metric tons each year.

But businesses that rely on plastic production, like fossil fuel and chemical companies, have worked since the 1980s to spin the pollution as a failure of waste management — one that can be solved with recycling. Industry leaders knew then what we know now: Traditional recycling would barely put a dent in the trash heap . It’s hard to transform flimsy candy wrappers into sandwich bags, or to make containers that once held motor oil clean enough for milk.

Now, the industry is heralding nothing short of a miracle: an “advanced”type of recycling known as pyrolysis — “pyro” means fire and “lysis” means separation. It uses heat to break plastic all the way down to its molecular building blocks. While old-school, “mechanical” recycling yields plastic that’s degraded or cont.