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Why is climate change awareness declining?
I contributed to my first climate change story in 1992, when I was working for Newsweek in the Washington bureau and people were still quaintly referring to the problem as the “greenhouse gas effect.” Newsweek was by no means a leader; this was four years after James Hansen famously told a congressional committee that humans were contributing to the warming trends he and his NASA colleagues were observing, and three years after Bill McKibben wrote his far-sighted End of Nature.
Although I do not consider myself to be an expert in the science of climate change, I have interviewed many people who are, and in 2004 contributed to National Geographic’s single-issue opus on the subject, entitled “Global Warning.”
What baffles me about the subject is this: Scientists have postulated for more than a century that increasing the level of carbon dioxide in the atmosphere could plausibly lead to an increase in terrestrial temperatures. Since the 1950s, there has been an unimpeachable data set that shows that the level of atmospheric carbon dioxide is on the rise. Since the 1970s at least, scientists have measured changes in the earth’s systems that correspond with what you might expect in a warming world – including simple, understandable data like increased average global temperatures, melting glaciers, and rising sea levels.
Fast forward to 2011. On virtually every scientific front, the data sets are getting stronger, the observations more conclusive, the models more robust, and the scientific consensus more profound: the planet is warming, and humans are contributing to this worrisome trend. Our prodigious burning of fossil fuels is creating a thicker atmospheric blanket that is trapping heat, and the planet is showing us signs that this warming trend is accompanied by other disturbing changes: our oceans are more acidic, species are disappearing because they cannot adapt to these changes fast enough, and human populations are at risk from rising sea levels, increased diseases, and profound changes in the ecological balance of many regions.
So why aren’t people listening?
In this profile and audio slide shoe of climate scientist James White of the University of Colorado, he explains again, and in beautifully simple terms, why he knows that the planet is changing, how he knows it, and a little about what it matters. White is one of the articulate ones, who can explain stable isotope ratios and paleoclimactic changes in a language that anybody (even me) can understand. Please take a few minutes to listen to what he has to say.