Millions of tons of plastic waste float down polluted urban rivers and industrial waterways and into the world’s oceans every year. According to Microsoft, a Hong Kong-based startup has come up with a solution to help stem these devastating waste flows. „Open Ocean Engineering has developed Clearbot Neo – a sleek AI-enabled robotic boat that autonomously collects tons of floating garbage that otherwise would wash into the Pacific from the territory’s busy harbor.“ (Deayton 2023) After a long period of development, its inventors plan to scale up and have fleets of Clearbot Neos cleaning up and protecting waters around the globe. The start-up’s efforts are commendable. However, polluted rivers and harbors are not the only problem. A large proportion of plastic waste comes from the fishing industry. This was proven last year by The Ocean Cleanup project. So there are several places to start: We need to avoid plastic waste. Fishing activities must be reduced. And rivers, lakes and oceans must be cleared of plastic waste.

Fig.: It is not enough to clean the rivers (Image: DALL-E 3)