One cent per dollar spent on travel goes into a climate change kitty. This small but consistent contribution would accumulate tremendously over time. This fund can support renewable energy research and generally fund the changes we could already make to, using existing technologies, to reduce our reliance on fossil fuels. This fund could also support third world countries in recovering from the increasingly frequent natural disasters that result from climate change. For now this idea is only about money spent on travel. But this could and should go further - 0.1 cent per dollar spent on every transition, globally, could also go into the kitty. Investing in climate resilience will prevent future economic losses (infrastructure, agriculture, public health). We will all be paying a much higher price if we don't call for serious action now.