PRX - Pieces for Tone: Unconventional
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Scientists believe the earth is in the midst of the 6th mass extinction of species now, due to human-induced causes.
- Added: Sep 15, 2010
- Length: 02:00
A scientific conference in London, England studied the geologic impacts of climate change by reviewing the records of previous warming periods. It...
- Added: Sep 15, 2010
- Length: 02:00