“Waste is money.” It’s a simple phrase—but in the hands of South African sustainability leader Tozama Kulati Siwisa, it becomes a blueprint for transforming lives, rethinking business, and tackling climate change from the ground up.In this episode of The Responsible Edge, Tozama joins host Charlie Martin to share her deeply personal and professional journey—from becoming a mother at 15 and putting herself through university, to leading sustainability for some of South Africa’s biggest companies. But this isn’t just a story of corporate ESG frameworks—it’s about how self-sufficiency and environmental stewardship can be taught, lived, and scaled to create true change.

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