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Save the Planet 1991 2.11
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Portable Network Graphic
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1991-05-30
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512x342
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1-bit (2 colors)
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OCR:
1.8- CH4 ppm, Antarctica, (B.Stauffer) 1.4 1.0- 0.6 T 1700 1800 1900 2000 METHANE LEVELS FROM ICE CORES & TODAY Year