Look again and it’s just a mesh of plastic bottles and netting. What’s going on here?

In May, the Forum produced a video on Guatemala’s ‘biofences’ — plastic bottles meshed together to form barriers across rivers to trap plastic and other waste.

The technology is smart, simple and cheap — using plastic to trap plastic. And given that the waste is recycled — a valuable new source of jobs.

The idea certainly resonated with the Facebook audience as the video went viral with 20 million views including the Spanish version.