What Climate Change Will Actually Look Like Where You Live

South America: The Amazon's Uncertain Tipping Point

The Amazon rainforest is approaching a potentially dangerous threshold. By the end of 2025, an estimated 97 million hectares of primary forest had been lost across the nine countries of the Amazon basin.

Deforestation weakens one of the rainforest’s most important natural mechanisms: evapotranspiration, through which trees release moisture into the atmosphere and help generate rainfall. As forest cover disappears, less moisture circulates through the region, potentially drying areas far beyond the deforested land itself.

Some scientific studies suggest that the Amazon could approach a tipping point when forest loss reaches approximately 25%. The precise threshold remains contested, but the consequences of large-scale forest dieback could be enormous. Disrupted rainfall patterns could damage agriculture, reduce fish populations and lower regional hydroelectric potential by 25–35%.