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As the global population expands, the demand for food rises steadily. Meeting these needs in a sustainable manner remains one of the greatest challenges of our time. It is becoming clear that recycling human wastes can provide effective fertilizers for enhancing soil fertility and crop production, soil amendments for increasing carbon sequestration, and a means for improving public sanitation and health. Yet while waste-based fertilizers are already used in many developing countries, the potential health risks connected to these practices are still debated, especially since very little is known regarding how antibiotics potentially contained in these fertilizers impact the soil-microbial-plant nexus.
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