Later On

A blog written for those whose interests more or less match mine.

Why the media tell climate story poorly

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Tyler Hamilton in the Toronto Star:

I apologize on behalf of my profession.

If it’s true that Canadians and Americans have become less concerned about the potential impact of climate change, and that more consider global warming a hoax, some blame can certainly be directed at the news media.

"The media (are) giving an equal seat at the table to a lot of non-qualified scientists," Julio Betancourt, a senior scientist at the U.S. Geological Survey, told a group of environment and energy reporters during a week-long learning retreat in New Mexico.

I was among them, listening to Betancourt and two of his colleagues describe the measurable impacts climate change is having on the U.S. southwest. Drought. More frequent and damaging forest fires. Northward migration of forest and animal species. Hotter, longer growing seasons. Less snow pack. Earlier snow melt.

"The scientific evidence reported in peer-reviewed journals is growing by the day, and it suggests the pace of climate change has surpassed the worst-case scenarios predicted just a few years ago.

Betancourt is the first to admit the science is constantly evolving and that the work at hand is highly complex. One challenge is separating the part of climate change caused by naturally occurring cyclical systems from the part caused by humans, who since the Industrial Revolution have dumped greenhouse gases into the atmosphere at an accelerating rate.

Clearly there is an interaction between the two. But can scientists explain it with bulletproof precision using predictive models everyone can agree on? No, of course not. That’s not how science works.

More difficult is that scientists such as Betancourt are realizing the climate changes observed are not happening in a gradual, predictable fashion but, instead, in sudden steps. Systems reach a certain threshold of environmental stress and then "pop," they act quickly to restabilize.

These changes also happen regionally, making it difficult for people in one region of the world to appreciate disruptive changes going on elsewhere.

Not surprisingly, those looking to stall action on climate change – or who altogether deny that humanity is contributing to global warming – are exploiting this complexity and lack of certainty.

A recent Pew Research Center poll of 1,500 Americans found that …

Continue reading.

Written by LeisureGuy

28 November 2009 at 11:51 am

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