CNN —Some leaves in tropical forests from South America to South East Asia are getting so hot they may no longer be able to photosynthesize, with big potential consequences for the world’s forests, according to a new study. They found that average forest canopy temperatures peaked at 34 degrees Celsius (93 Fahrenheit) but some exceeded 40 degrees Celsius (104 Fahrenheit). This level of warming is not expected under current climate policies, which are estimated to bring 2.7 degrees Celsius of warming above pre-industrial levels. While these figures may seem small, the risk is significant given how critical tropical trees are for life, the climate system and the planet. But, he added, there are more immediate concerns for tropical forests, including deforestation, wildfires and droughts.

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Persons: photosynthesize, Christopher Doughty, ” Doughty, Martin Zwick, ”, Kevin Collins, Christopher Still, there’s, it’s, “, Chloe Brimicombe, ” Joshua Fisher Organizations: CNN, Northern Arizona University, Getty, Open University, Science Media, Oregon State University, University of Graz, Chapman University Locations: South America, South East Asia, Nature, Australia, Brazil, ecoinformatics, Mobuku, Uganda, ”, Austria