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Climate Change

Too big to ignore

These three plots tell us why hydrocarbon substitution is so vital. Top left – the CO_2 level in the atmosphere (red) going back 400,000 years. In blue, we see the temperature. Temperature and CO_2 levels are clearly correlated. The last ice age occurred some 20,000 years ago and corresponded to a average temperature difference from today of about 5 degrees. Note: CO_2 levels never go above 305 ppm…until in the last 100 years. The plot above shows the increase in CO_2 over the last 60 years. The bottom plot shows the CO_2 levels since 2009. The level exceeded 400ppm in May 2013. What temperature rise does that suggest?

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