He told the Commons: "Waste is used to generate the heat that enables the ... and make the case that burying waste plastic in landfill is actually a cheap form of carbon capture and storage.

Plastic products are fabricated using routing, bending, and forming machines. Plastic forming processes include thermoforming, which uses heat to bend and form plastic sheet into particular products.

Scientists suspected that, among other possibilities, plastic drinking water pipes exposed to extreme heat released the chemicals (SN: 11/13/20). Now, lab experiments show that’s possible.