It’s possible that higher temperatures, higher concentrations of carbon dioxide in the atmosphere, and longer growing seasons are causing North American trees to grow at a faster rate than they have for over 200 years. Scientists have studied growth changes of 55 plots of forest over a period of 22 years — concluding that they are growing faster now than they have “at any time in the past 225 years – the age of the oldest trees in the study.”
[Via: The Independent]
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