By burning and depleting the world’s natural resources, the conventional energy system has led to multiple convergent existential crises, including climate change, air and water pollution, destruction of the oceans, the threat of mass extinction, water and food shortages, poverty, nuclear radiation problems, nuclear weapons proliferation, fuel decline, and geopolitical tension. However, the world’s climate and energy security issues are not caused by energy, but rather to the fuel we are using. Fortunately, renewable energy is clean, abundant, and with the exception of biomass, free and far less water intensive than non-renewable energy. Despite this basic logic, most of humanity so far has taken measures nowhere near proportional to the problem. One fundamental necessity to breaking the inertia is a robust, global campaign for 100% renewable energy.