Forests reach temperature tipping point - a podcast by RNZ

Dr Katharyn Duffy is an earth systems scientist at Northern Arizona University. Collaborating with a couple of colleagues from New Zealand, she led a study, published in Science Advances, that suggests as global temperatures rise, a tipping point will be reached and trees will emit more carbon than they take in through photosynthesis - forests will become carbon sources rather than carbon sinks.

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