This infographic from Ecofys shows where greenhouse gases come from. On the left, we see the source. In the middle we see who is using those fuels, and on the right, we see what gases are being released into the atmosphere. Oil, for example, is used principally in transportation, and transportation largely produces carbon dioxide. As you can see, more than a third of greenhouse gases come from direct emissions like burning forests ("land use change") and cow farts ("agriculture").
This infographic from The Energy Collective shows which countries have contributed most to climate change. Carbon emissions are cumulative, so while the UK has fallen off the list of top emitters, it's historical contribution is quite significant. (Birthplace of the Industrial Revolution, Britain got a heat start in the pollution game.) Who shoulders the greatest responsibility? The United States.
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