Particulate - Fine solid particles of dust, spore, pollen, dander, skin flakes, mite allergens, cell debris, mold, mildew, mineral fibers or solids escaping from combustion processes that are small enough to become suspended in the air, and in some cases, small enough to be inhaled.

Perceived obsolesence – The art of making products that go out of fashion or “date”, so you buy more slightly different ones, for example the fashion industry. Also see Planned obsolescence.

Photovoltaic panels – Solar panels that convert sunlight into electricity. Power is produced when sunlight strikes the semiconductor material and creates an electrical current.

Planned obsolescence – The art of making a product break/fail after a certain amount of time. Not so soon that you will blame the manufacturer, but soon enough for you to buy another one and make more profit for them. Also see Perceived obsolescence.

Plastic – Man-made durable and flexible synthetic-based product. Composed mainly of petroleum.

Plastic bags – Not very good for the environment.

Plastic recycling – There are seven different categories of plastics that can be recycled.

Pre-consumer Recycled Content - Material that has been recovered from the manufacturing waste stream before it has served its intended purpose.

Post consumer waste – Waste collected after the consumer has used and disposed of it.