Few 27-year-olds look at used cooking oil and see a green business opportunity to produce soap or dog food. But that is what Hugo Daniel Chávez, a project manager for the NGO Sustenta Honduras, has ...
Every time you finish frying, you're left with a pan of used cooking oil and a dilemma: what to do with it? Pouring it down the drain is an environmental disaster, but throwing it in the trash feels ...
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