We're just days away from COP26, the landmark global climate conference that's been dubbed the last chance to get the climate crisis in check. In the lead-up to the event in Glasgow, dozens of countries have released new ambitions to reduce their future carbon footprints. For years, climate activists and experts have called on governments to introduce carbon pricing schemes – either through taxes or emissions-trading schemes. So who's heeded the warning? We take a look at the top ten carbon emitters' share of global emissions and details about their respective national carbon pricing schemes.