Additional to an idea I posted on a Micro-levy for travel, taking it a step further. For every $1 spent on fossil-fuel derived energy use, $0.01 is automatically diverted into a global climate fund. Money is collected at the point of purchase - a 1% surcharge is added to the bill. People will hardly notice this, being less than a typical credit card transaction fee. Allocation of funds is governed by an independent board. Importantly, the fund could support third world countries recovering from the increasingly frequent natural disasters that result from climate change; poorer countries are disproportionately affected by climate change, despite contributing the least emissions. This is one way to help them.