105: How one dude is making a difference with Rob Greenfield
In this episode, we talk to, Rob Greenfield. He is an activist and humanitarian dedicated to leading the way to a more sustainable world. He is also the author of Dude Making a Difference and the creator of The Food Waste Fiasco. He’s been named “The Robin Hood of modern times” by France 2 TV and “The Forest Gump of Ecology. He has been taking on many challenges over the years like cycling around the US on a bamboo bicycle, wearing his trash for 30 days in New York and growing and foraging all of his own food for a year and is currently travelling the world with all his possessions that fit in a backpack.
During this episode, we take a look at his decision to earn no more than the federal threshold each year. We also look at the 44 items he owned, fitting in his backpack and what key items he cannot go without. He also shares with us his journey from wearing his trash for 30 days to growing and foraging all his food for a year and gave us some tips on how we can help out Mama Earth.
Indigenous and women-led grassroots environmental organizations that Rob support
My 44 possessions, everything I own fits in my backpack
How to turn your yard into a garden, grow food not lawns
Grow and forage 100% of your food in central Florida
Where can people find Rob?
KEY TAKE AWAY
“When we actually depend upon each other then we figure out ways to make sure that we are lifting others up, rather than bringing them down.”
About the author, Mariska
Hi, I’m Mariska – podcast host, artist, sustainability advocate and consultant, and storyteller driven by a deep passion for our planet. Sustainability isn’t just a topic I discuss; it’s a way of life I embody through my work, actions, and everyday choices.
My journey began several years ago when I started experimenting with trash as a medium in my artwork. What began as creative curiosity quickly turned into a deep dive into the environmental impact of waste. That curiosity expanded into a broader connection with nature—including a life-changing trek to the summit of Mount Kilimanjaro, where I found both clarity and purpose. It was there that I made the decision to leave the corporate world behind and commit fully to environmental work.
In 2018, I took that message public in the UAE by wearing every piece of trash I generated for 30 days. The result—65 kilograms of waste—sparked national conversations around sustainability and waste reduction. That bold experiment also became the catalyst for my podcast, Mama Earth Talk, where I’ve since connected with global thought leaders to explore sustainability and inspire meaningful action.
Over the years, I’ve collaborated with organizations such as Nespresso, Costa, and Dubai International Airport to implement practical and impactful environmental solutions. From optimizing waste management systems to leading awareness campaigns, I specialize in designing strategies that create real, lasting change.
My artwork—blending environmental advocacy with creative expression—has been collected by public figures including comedian Trevor Noah, environmentalist Adrian Grenier, entrepreneur Gary Vaynerchuk, radio host Kris Fade, Grammy Award-winning DJ Black Coffee, and NBA player Mason Plumlee. Through public speaking, podcasting, and art, I aim to inspire individuals and organizations to rethink their relationship with the environment.
With over a decade of international experience in design and project management across Australia, South Africa, the UK, India, and the UAE, I bring a unique mix of creativity and strategic insight to sustainability challenges. My global perspective allows me to collaborate across cultures, drive innovation, and empower others to make a meaningful impact.
As a lifelong learner and passionate advocate, I focus on practical, holistic solutions to environmental challenges—guided by systems thinking and a deep commitment to action. I hold a BA in Design, a postgraduate degree in Environmental Science, and a Master’s in Sustainable Design.