# Fossil Record Shows High CO2 Harms Forests, Not ‘Greens’ Planet

New research using fossil evidence reveals that historically high carbon emissions led to forest decline and damage, not increased plant growth. This challenges the argument that elevated CO2 benefits global greenery, underscoring the threat of unchecked emissions to ecosystems.

**Importance:** 4/5

## Sources

### World
- [The Guardian World](https://www.theguardian.com/us-news/2026/aug/13/forests-carbon-dioxide-emissions) — Thu, 13 Aug 2026 18:00:04 GMT