(photo credit: USGS)

With summer drawing to a close, it’s now clear that over the next 15 months until the 2012 elections many public figures are going to be existing in a fact-free zone.   Thus, we are beginning to hear again the denials of the fact that our earth is getting warmer as a result primarily of human activity and that the results of that warming will be wide-ranging. We can expect more severe weather events (droughts, hurricanes, tornadoes), rising water temperatures, declining Arctic sea ice, and disappearing glaciers, as well as impacts to a broad range of human and natural systems, including famine, displacement from flooding and desertification, and shrinking supplies of basic commodities.  It’s surprising that some would deny this, because we have been seeing all of these changes for some years now.

Our friends at the Union of Concerned Scientists have compiled a helpful and thoughtful document that brings together the assessment of the National Academy of Sciences and statement of 18 other scientific organizations regarding climate science.  Hopefully these sober and clear analyses from the best scientists in the world can help keep the conversation about climate change based on facts and evidence, not hyperboles and anecdotes.  Climate change is occurring, and we need our leaders to focus on what to do about it, not how to ignore it. In these days of 24/7 exposure, where “fair and balanced” means giving equal weight to opinions that represent less than 1% as to ones that represent 99%, and where it seems that if one shouts something loud enough and often enough it’s eventually accepted as credible, we need to remember not only that there is no substitute for good science but also that there is no excuse for giving a free pass to those in the fact-free zone.