If we want to have a decent chance of avoiding the worst effects of climate change we all need to have a three tonne footprint. In other words, everything we buy and do produces three tonnes of greenhouse gases each year. This requires lifestyle changes for most of us, but these are beneficial in many ways - especially financially. If we don't do this, we will not be able to prevent the worst impacts of climate change.
Three by 30 means getting a three tonne footprint by 2030 as the best way to get out of the current climate crisis.
Getting a three tonne footprint is the single biggest single thing that we can do to combat the worst effects of climate change. It is based on the scientific findings of 30,000 climate scientists from around the world, representing every country on the planet.