Actually that wouldn't be a very efficient solution because pollution is not evenly divided across the world's population. See this map [1] showing CO2 emission

Actually that wouldn't be a very efficient solution because pollution is not evenly divided across the world's population. See this map [1] showing CO2 emissions per capita, or this diagram [2] showing CO2 emissions per fertility. As this article [3] (unfortunately not in English) aptly puts it: "Air travels represents around 5% of the emissions of humanity [4], but 90% of humans have never taken a plane." (the 90% figure is arguably difficult to assess [5]. It comes from an article in French behind a paywall, but other sources [6] show similar numbers). Finally, CO2 is of course not the only source of pollution. But this map [7] showing meat supply per person shows a similar direction. [1] https://upload.wikimedia.org/wikipedia/commons/a/a7/CO2_emissions_per_capita%2C_2017_%28Our_World_in_Data%29.svg https://upload.wikimedia.org/wikipedia/commons/a/a7/CO2_emis... [2] https://www.gapminder.org/tools/#$state$time$value=2014;&marker$axis_x$which=children_per_woman_total_fertility&domainMin:null&domainMax:null&zoomedMin:1.12&zoomedMax:7.5&scaleType=linear&spaceRef:null;&axis_y$which=co2_emissions_tonnes_per_person&domainMin:null&domainMax:null&zoomedMin:0&zoomedMax:45&spaceRef:null;&size$which=yearly_co2_emissions_1000_tonnes&domainMin:null&domainMax:null&spaceRef:null;;;&ui$chart$decorations$enabled:false;;;&chart-type=bubbles https://www.gapminder.org/tools/#$state$time$value=2014;&mar... [3] https://medium.com/enquetes-ecosophiques/d%C3%A9mographie-et-climat-5a6ef5be37ed https://medium.com/enquetes-ecosophiques/d%C3%A9mographie-et... [4] https://core.ac.uk/download/pdf/30987495.pdf https://core.ac.uk/download/pdf/30987495.pdf [5] https://www.quora.com/What-percent-of-the-worlds-population-will-fly-in-an-airplane-in-their-lives https://www.quora.com/What-percent-of-the-worlds-population-... [6] https://www.theguardian.com/business/2020/nov/17/people-cause-global-aviation-emissions-study-covid-19 https://www.theguardian.com/business/2020/nov/17/people-caus... [7] https://upload.wikimedia.org/wikipedia/commons/e/ed/Meat_supply_per_person%2C_OWID.svg https://upload.wikimedia.org/wikipedia/commons/e/ed/Meat_sup...