As COVID-19 spread earlier this year, governments introduced lockdowns in order to prevent a public-health emergency from spinning out of control. In the near future, the world may need to resort to lockdowns again — this time to tackle a climate emergency.

Shifting Arctic ice, raging wildfires in western U.S. states and elsewhere, and methane leaks in the North Sea are all warning signs that we are approaching a tipping point on climate change, when protecting the future of civilization will require dramatic interventions.

Under a so-called “climate lockdown,” governments would limit private vehicle use, ban consumption of red meat, and impose extreme energy-saving measures, while fossil-fuel companies would have to stop drilling. To avoid such a scenario, the world must overhaul its economic structures and do capitalism differently.