The Desolation of Ecosystems Has Resulted in Our Planet Operating at Half Its Productive Capacity.

Why It Matters

The decline in biomass and biodiversity threatens food security, ecosystem services and climate resilience, imposing long-term economic and social costs; restoring vegetation and habitat at scale could reclaim productivity, reduce resource use and buffer communities against climate extremes.

Summary

A speaker warns that human activity has dramatically degraded Earth’s ecosystems, cutting global plant biomass by about half and driving 73% of species into decline. Agricultural expansion has consumed 1.5 billion hectares while roughly 2 billion hectares have been abandoned as unproductive, and wild animal biomass has collapsed from 95% to 5% of total animal mass. Marine fish stocks have fallen 60–80%, largely in the past century, leaving the planet operating at roughly 50% of its ecological productive capacity. The speaker cites local action—boosting urban tree canopy and restoring layered plant communities—as a way to dramatically increase photosynthetic capture, cut water use, and bolster biodiversity and climate resilience.