Part 3/7:
The effectiveness of biodegradable trash bags hinges dramatically on how we dispose of them. Even the best biodegradable bags can take a long time to break down if deposited in landfills, where the anaerobic environment leads to the production of methane—a significantly stronger greenhouse gas than carbon dioxide.
For effective decomposition, bioplastic bags should ideally be sent to an industrial composting facility. However, these facilities are not universally accessible, which complicates disposal for many.