Tessa Clarke, an entrepreneur focused on sustainability, shares innovative ways to tackle climate change through community sharing. She highlights that a staggering one-third of global food production is wasted, emphasizing how sharing can minimize this issue. Discussion points include the significant impact of household consumption on greenhouse emissions and the benefits of an app designed for sharing surplus food locally. Tessa advocates for a shift to a sharing economy, envisioning a movement that connects people to reduce waste and foster community well-being.