Twenty plastic-busting inventions to clean our rivers and seas
From plastic-devouring machines to watchful drones, these technologies are helping tackle plastic pollution in the ocean
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Plastic waste collected in the Great Pacific Garbage Patch by a prototype boom (Image: The Ocean Cleanup)
There’s an incomprehensible amount of plastic in the ocean – estimates put the known total at 5 trillion individual pieces, or around 150 million tonnes. An additional 8 million tonnes finds its way into the ocean every year. That’s only increased thanks to Covid-19 and the resulting surge in single-use items like masks and gloves.
Most plastic enters the ocean via rivers, which carry vast amounts of waste from inland sources. Once in the ocean, plastic is broken down by the sun’s rays and by wind and waves, eventually transforming into smaller fragments called microplastics. But the hardy nature of the material means that this process can take hundreds of years. In the meantime,
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