VOICED: Humans linked to dust cloud damage

Dust storms in the southwest are becoming more frequent and intense due to human activities like coal burning and cattle grazing. Researchers from the University of Colorado are studying dust layers to understand these changes. Dust contains harmful metals like arsenic and lead, posing health risks, but it also fertilizes land. Scientists aim to clarify dust's dual role in the environment.

In what ways can dust be both life-sustaining and life-threatening?

What efforts are scientists making regarding the study of dust?