The reality is that we will not fix our environmental problems through individual behaviour change alone. This became obvious during the coronavirus pandemic. The world spent most of 2020 at home, at a huge cost to the quality of life for millions of people. Our lives were stripped back to the bare minimum. There were hardly any cars on the roads or planes in the sky. Shopping malls and entertainment venues were shut. Economies across the world tanked. There was a dramatic and almost-universal change in how all of us lived. What happened to global CO2 emissions? They fell by around 5%.

