Getting ordinary plastic bags to rot away like banana peels would be an environmental dream come true.

After all, we produce 500 billion a year worldwide and they take up to 1,000 years to decompose. They take up space in landfills, litter our streets and parks, pollute the oceans and kill the animals that eat them.

Now a Waterloo teenager has found a way to make plastic bags degrade faster -- in three months, he figures.