
by Sharon Levy
February 29, 2008
For some people forests are measured in board-feet of lumber. For others they're a source of spiritual renewal. But scientists are finding that protecting ancient trees could also be an important new strategy in the fight against global warming.
I climb a long series of ladders that lead to nothing but sky. Wind hums in the struts of the metal tower around me, causing it to vibrate like a giant guitar string and carrying the scent of warm pinesap, which saturates the air of Oregon's East Cascades in late summer. As I move higher, I pass arrays of high-tech gear that swallow samples of air, then analyze the amount of carbon dioxide in each gulp.
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