TUNJA, Colombia — Three yellow-and-black beetles clung to the shirt of Germán Viasus Tibamoso, a Colombian environmental engineer who uses beetle larvae to transform food waste into fertilizers. As he ...
DULUTH, Minn. -- The steel building where Allen Edberg works on furs is lit by only two light bulbs dangling on long cords from the ceiling. When you enter on a bright winter day, you will need to ...
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