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Leaves Keep Their Cool Friday, June 13, 2008 - Ehud Rattner Home >> Headlines >> Biology   
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Whether growing in the heat of Puerto Rico or in the icy chill of northern Canada, tree leaves are able to buffer against the outside temperature, new research has found. A survey of 39 North American tree species over an area spanning 50 degrees of latitude has shown that plants protect one of their most important functions – photosynthesis – by maintaining average leaf temperatures at around 21 Celsius degrees, regardless of the weather. (source: nature.com)
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