[PCA] NEWS: New species discovered in Yosemite

[Olivia Kwong]

http://www.msnbc.msn.com/id/26872421/

New species discovered in Yosemite
Researchers say lichen found in national park key to pollution studies
updated 2:25 p.m. ET, Wed., Sept. 24, 2008

YOSEMITE NATIONAL PARK, Calif. - After exploration by millions of
visitors over the past 100 years, it's hard to imagine anything left
to discover amid the majesty of Yosemite's glacier-cut granite cliffs
and giant Sequoia groves.

But, by thinking small, scientists have discovered new species of
lichen clinging like microscopic starfish to Yosemite icons such as
El Capitan, Half Dome and Vernal Falls, and countless slabs of less
famous rock. And they are trying to determine whether the species
exist anywhere else.

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