Plastic last thousands of year

Plastic lasts hundreds or thousands of years in the environment.

✔ Truth
The first thing to say is that all organic materials degrade (namely everything based on carbon). Standard plastics degrade outdoors in a few years, or even sooner unless they are stabilized. But, if put in landfills, even food and paper don’t degrade because there’s not enough oxygen present.

Sources: Chris DeArmitt, "The Plastic Paradox - Facts for a better future"
                   Dr. William Rathje, "Rubbish!: The Archaeology of Garbage"