Brazil cheers a sharp fall in Amazon deforestation — but fire and drilling stir new fears

Brazil has reported a striking drop in Amazon deforestation, offering a rare piece of good news for the world's largest tropical rainforest and a boost to President Luiz Inácio Lula da Silva's environmental agenda. Yet the headline figures mask a more complicated picture, in which falling clear-cut rates are being offset by rising forest degradation and a contentious new push to drill for oil near the river's mouth.

According to Brazil's National Institute for Space Research, deforestation in the Amazon in May was 61.4% lower than in the same month a year earlier. Over the ten months from August 2025 to May 2026, clear-cutting fell by 37.5% compared with the equivalent period the year before, continuing a downward trend the government has championed on the international stage.

The figures have allowed Brasília to push back against external criticism of its environmental record and to point to concrete progress. But scientists and campaigners caution that the rainforest faces a shifting set of threats that raw deforestation numbers do not fully capture.

Progress on clear-cutting

The decline in deforestation marks a significant turnaround from the surge recorded in previous years and reflects a renewed enforcement push, including expanded monitoring, stepped-up penalties and the reactivation of protection agencies that had been weakened under the previous administration. For a government that has staked much of its international standing on protecting the Amazon, the data is welcome validation.

Earlier figures had shown deforestation hitting multi-year lows ahead of the UN climate summit Brazil hosted, and officials have leaned on those gains to argue that the country is delivering on its pledges. The latest monthly drop reinforces the narrative that the trend is durable rather than a one-off.

“The numbers show that protecting the Amazon is possible when there is political will, but the work is far from finished.”

— Brazilian environmental official

Fire and degradation outpace the clearance

The optimism is tempered by a growing recognition that clear-cutting is no longer the only — or even the main — danger. Forest degradation, driven by wildfires, selective logging and drought, now affects roughly 40% of the Amazon and has in recent years outpaced outright clearance. Degraded forest stores less carbon, is more vulnerable to fire and can edge towards a tipping point beyond which it struggles to recover.

Climate conditions are compounding the risk. Periodic warming of the equatorial Pacific brings hotter, drier weather to the rainforest, parching vegetation and fuelling the blazes that have scorched record areas in recent fire seasons. Researchers warn that even as the chainsaws fall silent, the flames are spreading.

• Amazon deforestation in May down 61.4% year on year
• Clear-cutting fell 37.5% over August 2025 to May 2026
• Forest degradation now affects around 40% of the Amazon
• Wildfires, logging and drought driving the degradation surge
• Petrobras has begun exploratory drilling near the Amazon river's mouth

The drilling dilemma

Adding to the controversy, Brazil's state oil giant Petrobras has begun exploratory drilling near the mouth of the Amazon River, an area regarded as a promising new oil frontier. Environmentalists have condemned the move as inconsistent with the country's climate leadership, warning of the ecological risks of drilling in such a sensitive region.

The episode lays bare a tension at the heart of Brazilian policy: the government wants to be seen as a guardian of the Amazon while also pursuing the oil revenues that drilling could bring. Reconciling those goals is proving politically and environmentally fraught, and the dispute is likely to shadow Brasília's green messaging for some time.

Background

The Amazon is often described as a vital regulator of the global climate, storing vast quantities of carbon and influencing rainfall patterns across South America and beyond. Deforestation rose sharply during the previous Brazilian administration before falling again after Lula returned to office pledging to protect the forest. Brazil's role as host of recent UN climate diplomacy has placed its environmental record under intense international scrutiny.

What it means

The latest data suggests Brazil is winning the battle against clear-cutting but facing a tougher fight against fire, degradation and the lure of fossil-fuel extraction. Sustaining the deforestation gains while curbing wildfires and resolving the drilling question will determine whether the country can credibly claim to be safeguarding the Amazon. For a forest seen as critical to the planet's climate, the stakes could hardly be higher.