Citizen scientists map global forests

New global forest maps combine citizen science with multiple data sources, for an unprecedented level of accuracy about the location and extent of forestland worldwide. "The new maps rely on a combination of recent multisensory remote sensing data, statistics, and crowdsourcing," says the lead author of the study. "By combining different data sources, and incorporating the input of trained citizen scientists, we were able to produce new maps that are more accurate than any existing data source."

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