Founder & President of Global Footprint Network
Winner of the World Sustainability Award · IAIA Global Environment Award

So shooting for one planet just means you would be totally dominant, and leave no space for other species. Ecologists say to maintain 85% of preindustrial biodiversity, it would take about at least half the planet left on its own. That would mean getting to half-planet. And now we use at least 1.75. I say at least because our assessments with about 15,000 data points per country in a year are based on UN statistics, and their demand side is probably an underestimate because not all demands are included. And also on the supply side or the regeneration side, the UN is very production oriented, so it's the FAO numbers, for example, look at agricultural production, and the depletion side or the destruction side is not factored in adequately. So that's why it's an underestimate. And still, it shows we use about 1.75 Earths, and that's more than three times half an Earth. So that's kind of the difference. But we also know overshoot will end one way or another. The question is do we choose to end it? Do we choose it by design, or do we let nature take the lead and end overshoot by disaster? So it's really ending overshoot by design or disaster. That's the big choice we need to make.