Scientists discover rising heat leaves trees struggling to turn sunlight into energy: 57 million hectares of tropical forests already affected; Heat waves goes beyond photosynthesis limits

Rising global temperatures are pushing millions of hectares of tropical forests beyond the heat levels where trees can efficiently carry out photosynthesis, according to a study published in PNAS. Researchers found that 57 million hectares have already crossed critical heat thresholds, raising concerns over forests’ ability to absorb carbon and support biodiversity.