I confess, I regard the Ignorers with a mix of envy, scorn, and pity. Some of them are oblivious, some of them are outright deniers, and then others are cognizant of the science of climate change, and the death trap of peak oil...but willfully refuse to follow the dots to the inevitable denouement. How will they all cope with the unbearable knowledge once it becomes inescapable? I expect that rather than admit the pivotal role humans have played in destroying our own home - the Earth - many will instead turn to fundamentalist doomsday cults...which will vary from the ludicrous to the dangerous...and others will flock to technological solutions that amount to no more than magical thinking.
This recollection causes me to suspect I have always had a visceral predisposition towards instinctive knowledge of our doom, which explains a lot. Oh well.
Yesterday I was once again listening to the Brian Lehrer show, which this time was about inflation and how it impacts the owners of small businesses. Coincidentally it corroborates what I've been warning about here at Wit's End for some time - which is food shortages (plants are the base of the foodchain!)
"There's a supplier from Connecticut that we use, but they're actually getting it straight from the source, basically across the world depending on what type the nut is, and they're also seeing their costs go up...."
There was more conversation and plaintive perplexity about the mysterious increase in nut prices, which you can listen to if you like. Comments on the NPR website are accompanied below by some pictures from a gallery at the Guardian, where the winner of this year's prize from the Prix Pictet competition is featured, in a series by Mitch Epstein called "American Power."
Rising Surface Ozone Reduces Plant Growth and Adds to Global Warming...Scientists from three leading UK research institutes have just released new findings that could have major implications for food production and global warming in the 21st century...Experts from the Met Office, the University of Exeter and the Centre for Ecology & Hydrology, have found that projections of increasing ozone near the Earth's surface could lead to significant reductions in regional plant production and crop yields. Surface ozone also damages plants, affecting their ability to soak up carbon dioxide from the atmosphere and accelerating global warming.
Jim
Human activities and the nitrogen cycle
- burning of both fossil fuels and forests, which releases nitrogen into the atmosphere
- fertilizing crops with nitrogen-based fertilizers, which then enter the soil and water
- ranching, during which livestock waste releases ammonia into the soil and water
- allowing sewage and septic tanks to leach into streams, rivers, and groundwater
Harmful effects of nitrogen deposition
- ecosystems: Nitrogen additions to the soil can lead to changes that favor weeds over native plants, which in turn reduces species diversity and changes ecosystems. Research shows that nitrogen levels are linked with changes in grassland species, from mosses and lichens to grasses and flowers.
- precipitation: Nitrogen oxides react with water to form nitric acid, which along with sulfur dioxide is a major component of acid rain. Acid rain can damage and kill aquatic life and vegetation, as well as corrode buildings, bridges, and other structures.
- air quality: High concentrations of nitrogen oxides in the lower atmosphere are a precursor to tropospheric ozone which is known to damage living tissues, including human lungs, and decrease plant production.
- water quality: Adding large amounts of nitrogen to rivers, lakes, and coastal systems results ineutrophication, a condition that occurs in aquatic ecosystems when excessive nutrient concentrations stimulate blooms of algae that deplete oxygen, killing fish and other organisms and ruining water quality. Parts of the Gulf of Mexico, for example, are so inundated with excess fertilizer that the water is clogged with algae, suffocating fish and other marine life.
- carbon cycle: The impacts of nitrogen deposition on the global carbon cycle are uncertain, but it is likely that some ecosystems have been fertilized by additional nitrogen, which may boost their capture and storage of carbon. Sustained carbon sinks are unlikely, however, because soil acidification, ozone pollution, and other negative effects eventually compromise nitrogen-enhanced carbon uptake.

















