
I'm three years behind the curve, but I finally watched
An Inconvenient Truth last night. A significant portion of the movie was about natural disasters, and hurricanes in particular (with a focus on Katrina). Because of global warming, hurricanes, typhoons and cyclones are becoming more frequent, and more powerful. The movie showed charts outlining this, and other natural disasters (flooding, drought, lightening, tornadoes, etc.), on an alarming rise since the 1970s.
Some of the most compelling images from the storm were the flood pictures. When the levees broke, water rushed into the city and people were trapped on their roofs or in their attics. The city is below sea level, and relies on engineering to keep the water out. Doghouse don't kill me, but this seems like a recipe for disaster. And it took a disaster to call national attention to the frailty of the levee system.
But the levees are not the only factor contributing to New Orleans' tenuous position.
Its natural buffer zone has shrunk, too. When we went to Mobile, we watched an IMAX movie at the science museum called
"Hurricane on the Bayou," about:
"the rapidly disappearing wetlands that are New Orleans’ first line of defense against deadly storms. Vanishing at an astonishing rate of one acre every 38 minutes according to the U.S. Geological Survey, the wealth, cultural vitality and very future of New Orleans depend on the preservation of these wetlands."Without that buffer zone, New Orleans is vulnerable to major storms, of course, but even weaker hurricanes can cause major damage. It's a compelling (and scary!) movie. Here's another graph from the movie Web site:
"Scientific studies by the Army Corps of Engineers suggest that every 2.7 feet of wetlands can reduce deadly storm surges by a foot. Without wetlands restoration, recovery efforts in New Orleans may all be for naught because it is only a matter of time before another monster storm comes the city’s way."Making it even worse, Al Gore's movie also touched on melting ice caps, and he showed slides of major cities around the world that would be partially or totally submerged. A good portion of the state of Florida would be underwater, so you can imagine how New Orleans looked on that map.
The poor city seems to be under attack, from a lot of different factors.
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*Disclaimer*
THIS IS NOT A POLITICAL ISSUE. THIS IS NOT LIBERAL V. CONSERVATIVE OR REPUBLICAN V. DEMOCRAT.
But it is going to take political action to enact change. Our environment is something we should all be concerned about, regardless of party affiliation. The vast, vast majority of scientific study shows that if we don't
cut our carbon emissions, the planet will continue getting hotter. Sea level will rise, national disasters and heat waves will get worse and more species will become extinct.
This isn't some abstract concept that we shouldn't concern ourselves with; I heard on the news this morning that a "major hurricane" could be
in the Gulf this weekend. We are not ready for this!