An excellent presentation by photographer James Balog revealing the results of his Extreme Ice Loss Survey. Very interesting time-lapse photography showing the extreme ice loss that's occuring world-wide. About 7 minutes and 30 seconds into the 19 minute video, he displays a graph revealing how the natural CO2 cycle (over the past million years) peaks at 280 ppm; however, over the past 100 years, the CO2 level has spiked to 385 ppm and it's continuing to rise at a rate of 2.5 ppm per year.
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