I'm trying to understand - why is it negative emissions? I'm unfamiliar with LPG (Liquefied Petroleum Gas), it's a byproduct of something else? It just seems li

I'm trying to understand - why is it negative emissions? I'm unfamiliar with LPG (Liquefied Petroleum Gas), it's a byproduct of something else? It just seems like it's produced like gas normaly is, it's just cleaner by 30ish%. Could you tell me more or direct me somewhere? Edit: https://newatlas.com/materials/catalyst-mixed-plastic-waste-propane-recycle/ https://newatlas.com/materials/catalyst-mixed-plastic-waste-... I think this is it