Advertising can contribute to the climate crisis, but it can also be a force for change. We hear about efforts underway here in Canada to strengthen rules around fossil fuel advertising. And how some European cities and towns are banning “high carbon advertising” altogether. Plus, a former ad executive shares the personal story of how he stopped selling soap and credit cards and is now using his skills to find marketing messages that motivate climate action. Spoiler: it's all about love. What On Earth's climate justice columnist Chúk Odenigbo discovers gaps in how Black communities in Hamilton, Ontario understand and experience climate change. Also, we explore the magical world of mushrooms as a climate solution.