Pollution from plastic 'cuts global food supply'

The pollution of the planet by microplastics is significantly cutting food supplies by damaging the ability of plants to photosynthesise, according to an assessment.

- Damian Carrington

The analysis estimates that between 4% and 14% of the world's staple crops of wheat, rice and maize is being lost due to the pervasive particles. It could get even worse, the scientists said, as more microplastics pour into the environment.

About 700 million people were affected by hunger in 2022. The researchers estimated that microplastic pollution could increase the number at risk of starvation by another 400 million in the next two decades, calling that an "alarming scenario" for global food security.

Other scientists called the research useful and timely but cautioned that this first attempt to quantify the impact of microplastics on food production would need to be confirmed and refined by further data-gathering and research.

The annual crop losses caused by microplastics could be of a similar scale to those caused by the climate crisis in recent decades, the researchers said. The world is already facing a challenge to produce sufficient food sustainably, with the global population expected to rise to 10 billion by about 2058.

Microplastics are broken down from the waste dumped into the environment. They hinder plants from harnessing sunlight to grow in multiple ways, from damaging soils to carrying toxic chemicals. The particles have infiltrated the entire planet, from the summit of Mount Everest to the deepest oceans.