This week on Sea Change Radio, we speak with the CEOs of two startups that are trying in very different ways to help the planet. First, we hear from Ethan Steinberg of Propagate Ventures to learn more about how his company helps promote agroforestry efforts across the country. Then, we travel to Rotterdam and talk with Michaël Van der Jagt about his Dutch company, Parx Materials, which uses bio-mimicry to forge chemical-free, bacteria- and virus-resistant polymers, enabling the safe re-purposing of ocean waste plastic among other things.