Were trees or urban heat islands mentioned at any point during Emperor Gahan’s re-enthronement campaign? I didn’t think so.


If so, I don’t remember it — apart from a meme or two of bragging, sans substantiation, about tree plantings that we seldom see. The infernal hum of chain saws are another story.

Look, here’s the thing … as in the other questions we ask … how about some proof?

You know, something that actually shows the number of trees gone, as opposed to the number planted. We have an arborist and a tree board, right?

Surely they have hard, real statistics.

Can we see the statistics?

Because of the stats aren’t there, how can the self-congratulatory memes be anything other than fake news?

Re-greening: can Louisville plant its way out of a heat emergency?
 by Josh Wood (The Guardian)

The Kentucky city is the fastest-warming urban heat island in the US – and as its temperature has risen, its tree cover has plummeted

There are parts of Louisville, Kentucky, that are enveloped in green, where towering trees arc over broad avenues and walkers, joggers and bikers enjoy beautiful parks designed by Frederick Law Olmsted, the man who drew up plans for Manhattan’s Central Park.

Even on the hottest days of summer, these neighbourhoods feel comparatively refreshing next to the more sun-baked quarters of the city, where shade is often an unavailable commodity on the street.

Cities are their own climates, often hotter than their surroundings due to the way surfaces like asphalt trap heat even as cars and buildings exude it. When a city is markedly warmer than surrounding rural areas, it is called an urban heat island – and Louisville ranks among the worst heat islands in the US, according to a 2014 study, with an average temperature difference of 2.7C (4.8F). Worse still, a 2012 study by Georgia Tech’s Urban Climate Lab found that Louisville was the fastest-warming urban heat island in the nation.

Part of the reason for Louisville’s temperature extremes is geography. But a lot of it comes down to trees …