<i>Biocontaminant</i>—toward sustainable development and planetary health

This Editorial marks the inaugural issue of Biocontaminant, an international journal and platform dedicated to multidisciplinary research on biocontamination and its profound impacts on sustainable development and planetary health.The 21 st century has been marked by unprecedented challenges of pandemics, environmental pollution, and biodiversity loss.As the world strives toward the United Nations' 17 Sustainable Development Goals (SDGs), biocontaminants-such as pathogens, toxins, invasive species, and allergens-emerge as systemic threats to this global blueprint, directly threatening human well-being, ecosystem services, and planetary health.Biocontaminant is launched as a multidisciplinary platform to dissect these complex challenges and pioneer solutions for a resilient future.