London climate strike 20 September 2019, photo Paul Mattsson

London climate strike 20 September 2019, photo Paul Mattsson   (Click to enlarge: opens in new window)

Just 20 fossil fuel companies are directly linked to more than one third of all greenhouse gas emissions since 1965. The company top of the list – Saudi Aramco – is responsible for 4.38% on its own while the top four privately-owned firms – Chevron, Exxon, BP and Shell – have contributed 10%.

The list shows both the need for nationalisation and public ownership of these companies – but as many on the list are already state owned – also the need to go further and run these companies under democratic workers’ control and management as part of a planned socialist economy.