Photo of the day

Recent National Geographic photo of the day:

Photo: Scientists collecting samples from a giant redwood tree

Photograph by Michael Nichols, National Geographic

This Month in Photo of the Day: Adventure and Exploration Photos

Partway up a 350-foot tree, botanist Marie Antoine (at right) passes a slender core sample of its wood—750 years of redwood biography—to canopy ecologist Giacomo Renzullo. Research now shows that the older such trees get, the more wood they put on.

About Steve Greene
Professor of Political Science at NC State http://faculty.chass.ncsu.edu/shgreene

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