Tropical forests nearing critical temperatures thresholds

Global warming is driving leafy tropical canopies close to temperatures where they can no longer transform sunlight and CO2 into energy, threatening total collapse if the thermometer keeps climbing, according to a study Thursday. A tiny percentage of upper canopy leaves have already crossed that threshold, reaching temperatures so high — above 47 degrees Celsius […]

climate collapse critical driving energy environment forests global global warming high rainforest study tiny warming world