Shifting Waistlines: Polar Bears and Global Warming

svPOLAR_narrowweb__300x447%2C0.jpg In his 2002 Op-Ed in the LA Times, Randy Olson wrote about the concept of shifting baselines and uses this analogy: "If your ideal weight used to be 150 pounds and now it's 160, your baseline--as well as your waistline--has shifted." But get this:

Due to global climate change (which has cascaded into changes in feeding patterns), female polar bears weigh an average 20 percent less than they did in 1980. This I heard yesterday from a Program Officer for the UN Convention of Biological Diversity (which the U.S. has signed but not ratified--our "signature" move). Skinnier polar bears, just another shifting baseline (waistline).

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If you've ever complained that the kids today just don't understand how things used to be in the good old days, then you've grasped the concept of shifting baselines.
As we pass through Spring on the way to summer, the sea ice in the Arctic is starting to melt. The ice usually peaks by the end of the first week in March or so, then slowly declines for a few weeks, then by about mid-May is heading rapidly towards its likely September minimum.

Hey, maybe with global warming, Americans will start to shift their waistline in a negative direction, too.

Unfortunately, the all-American feeding pattern of junkfood+TV probably won't change much.