Photo of the day
May 30, 2012 Leave a comment
Recent National Geographic photo of the day:

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.