[s9e17] Upgrade -

The episode focuses on the ambitious engineering "upgrade" proposed by , founded by Boyan Slat.

Explain the of why ocean plastic is so hard to recycle. [S9E17] Upgrade

Even with the most advanced upgrades, collecting every piece of microplastic is physically impossible with current technology. The episode focuses on the ambitious engineering "upgrade"

While the technology is impressive, the story concludes with a sobering scientific perspective: [S9E17] Upgrade