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A pair of widely used chemicals in the form of tiny "nanoparticles" have been shown to spread throughout a crop plant or affect growth and soil fertility.
The nanoparticles harmed bacteria that the plant relies on for growth.
Whilst many of their effects have been well documented, some of their mechanisms of action are not fully understood. Concern has arisen that widespread long-term nanoparticle use may "trickle down" into the environment, sparking unforeseen effects on plant or animal, or even human, health.
