As a sustainability solution, cloth diapers were never fun. Even the most eco-minded have been known to quail in front of a pail of soiled nappies. But a team of researchers has come up with an excuse for switching back to disposable diapers. They found that within 2 months, oyster mushrooms will consume 90 percent of a disposable diaper. Within four months, the entire thing is gone.

Plus, the resulting mushrooms are safe to eat for anyone who can look past their origins. It's like a double sustainability rainbow.

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