In 2025, the world lost 4.3 million hectares of tropical primary forest—yet that number marked a rare victory: a 36% drop from the year before, the sharpest single-year decline in two decades. For Elizabeth Goldman, co-director of the World Resources Institute’s Global Forest Watch (GFW), the data offers cautious hope after years of relentless deforestation and record-breaking fires. The improvement wasn’t evenly spread, but it was significant—driven largely by a dramatic turnaround in Brazil, where political leadership and renewed enforcement have reshaped the forest protection landscape. Still, Goldman warns that one good year doesn’t signal a trend. "If 2025 had been another bad fire year like 2024, we’d be telling a very different story," she said in an interview with Mongabay.
The stakes couldn’t be higher. Tropical primary forests—mature, biodiverse ecosystems untouched by industrial logging—are vital carbon sinks and home to millions of species. Their loss accelerates climate change and erodes ecological resilience. While 4.3 million hectares is still an area larger than Switzerland vanishing in just 12 months, the 36% decline suggests that determined action can make a difference. In Brazil, where deforestation accounts for a major share of global tropical forest loss, the drop was even steeper when fire-related losses were excluded: over 40%. This points to the impact of policy, not just weather. Under President Luiz Inácio Lula da Silva, Brazil revived its National Action Plan for Combating Deforestation (PPCDAm), strengthened environmental enforcement, and leveraged near-real-time satellite monitoring to target illegal clearing.
Brazil wasn’t alone. The Democratic Republic of Congo, home to the second-largest tropical rainforest on Earth, saw a 5% reduction in primary forest loss between 2024 and 2025. Indonesia, long a focus of global deforestation efforts, continued its downward trajectory, though challenges remain. Still, Goldman stresses that progress is fragile. The return of El Niño in 2026 threatens to bring hotter, drier conditions across the tropics—ideal for wildfires, which are becoming an increasingly dominant driver of forest loss. Without sustained political will, corporate accountability, and international support like the EU Deforestation Regulation, gains could vanish as quickly as they appeared.
The 2025 data is not a finish line, but a signal: change is possible when leadership, policy, and technology align. "It’s a better year, but it’s just one year," Goldman reminds us. The real test lies ahead—not in celebrating a single drop, but in building systems resilient enough to endure shifting climates and shifting governments. If the world can replicate Brazil’s mix of enforcement, transparency, and commitment, the fragile gains of 2025 might just become the foundation of a lasting turnaround.