A small news splash surfaced this week over a recent paper in Nature, regarding the prospects for Arctic sea ice and, consequently, polar bear populations. Until this paper was published, studies had only examined business-as-usual scenarios. We didn’t really know whether or not, if we pursued aggressive mitigation, it would be too late to save the polar bears from extinction.
The GCM output this paper analysed suggested that there is hope. They found the relationship between temperature and sea ice cover to be more linear, and the ice-albedo feedback in the Arctic to be weaker, than we previously thought. Tipping points where sea ice is beyond hope might not be such a problem. Therefore, we may still have a chance to limit damage to the ecosystem that experiences consequences of climate change earliest and strongest, and the polar bears might still make it. Nature News has a great summary for those who want more detail on the literature.
When the story showed up in my CBC News feed, however, I was bewildered at the angle they took:
Polar bears could be saved from extinction if greenhouse gas emissions are significantly reduced in the next decade or two, a study released Wednesday suggests.
As if that’s the most compelling reason to pursue mitigation…
Don’t get me wrong: it would be a shame to see the polar bears go. But it would be much worse to see agriculture in the subtropics go, or to see low-lying nations go. I believe that the public is wise enough to understand that sentimental notions about an oft-romanticized species are minuscule in their importance when compared to matters of human security.
Additionally, since polar bears reside at the top of the food chain, the ecological consequences of their loss – while certainly not trivial – would probably be less intense than if it were another species. Imagine the hypothetical scenario of termites going extinct – it would be much worse. Termites aren’t quite so cute and cuddly, though.
I continue to be amazed by choices that the mainstream media makes as to which studies to report on and which studies to ignore. Their picture of ordinary people’s priorities is baffling and somewhat insulting. I get it - I have a strong affinity for wildlife – but the species I care about the most is still Homo sapiens, despite its blatant shortcomings.