Keyboard environmentalists talk a big game when it comes to saving the planet, but fail to back those words with action. Such is not the case for David Katz, a Canadian entrepreneur who’s blending blockchain technology with a noble environmental cause: reducing the amount of plastic waste suffocating marine ecosystems.

David knows first-hand how daunting the fight against marine debris is, and as the CEO of The Plastic Bank, he’s prepared to take on the cause.