From a press release issued by the United States Geological Survey:
Human use of Earth’s natural resources is making the air, oceans, freshwaters, and soils more acidic, according to a U.S. Geological Survey – University of Virginia study available online in the journal, Applied Geochemistry.
This comprehensive review, the first on this topic to date, found the mining and burning of coal, the mining and smelting of metal ores, and the use of nitrogen fertilizer are the major causes of chemical oxidation processes that generate acid in the Earth-surface environment.
These widespread activities have increased carbon dioxide in the atmosphere, increasing the acidity of oceans; produced acid rain that has increased the acidity of freshwater bodies and soils; produced drainage from mines that has increased the acidity of freshwater streams and groundwater; and added nitrogen to crop lands that has increased the acidity of soils.
(via Doc Searls)
You can find the study here (I’ve not read it).
A few thoughts, assuming this study, and the description of i, is accurate:
1) I’ve argued for a while that even if global warming isn’t real, or if humans aren’t causing it, most of the tasks associated with trying to slow or stop it are still worth while (see: What If We Created a Better World for Nothing?). This study seems to confirm that.
2) I was skeptical about the value of organic farming, but this essay by Manuel Delanda convinced me that there is value there, if nothing else, in reducing dependence on external sources for fertilizers, therefore creating more resilience for organic farms (but I still think it’s an overhyped, poorly defined term mostly used by large corporations to bilk customers into paying more for food). This study presents another reason to reduce the use of nitrogen fertilizers.
Grist is calling this a trend, but doesn’t it take three times to make a trend?
Hey, remember the woman threatened with 93 days in jail for growing a garden in her front yard? She could have a cellmate! Dirk Becker of Lantzville, British Columbia turned his scraped-dry gravel pit of a property into a thriving organic farm, so of course he’s facing six months of jail time. Why? Well, the thing is, this farm was full of DIRT. You can’t have dirt in a yard! It’s unsanitary.
The Beckers were cited under Lantzville’s “unsightly premises” bylaw, for having piles of dirt and manure on the property. As the Beckers wryly point out, the letter came on the same day that 8,000 compost bins were distributed to residents in their region. So, to recap: Gravel pit: not unsightly. Beautiful farm with dirt in it: unsightly. Fertilizer in bin in kitchen: civic responsibility. Fertilizer actually out fertilizing: filth!
As it turns out, Lantzville has a bylaw that residentially zoned plots can’t grow food at all — even the no-dirt kind! — whether or not they’re farming commercially. The Beckers’ 2.5-acre property is zoned as residential, so they essentially are not allowed to eat anything that comes out of their garden. Ah, local government, always improving lives.
Mr. Jones, 30, and his wife, Alicia, 27, are among an emerging group of people in their 20s and 30s who have chosen farming as a career. Many shun industrial, mechanized farming and list punk rock, Karl Marx and the food journalist Michael Pollan as their influences. The Joneses say they and their peers are succeeding because of Oregon’s farmer-foodie culture, which demands grass-fed and pasture-raised meats. […]
The problem, the young farmers say, is access to land and money to buy equipment. Many new to farming also struggle with the basics.
In Eugene, Ore., Kasey White and Jeff Broadie of Lonesome Whistle Farm are finishing their third season of cultivating heirloom beans with names like Calypso, Jacob’s Cattle and Dutch Ballet.
They have been lauded — and even consulted — by older farmers nearby for figuring out how to grow beans in a valley dominated by grass seed farmers.
But finding mentors has been difficult. There is a knowledge gap that has been referred to as “the lost generation” — people their parents’ age may farm but do not know how to grow food. The grandparent generation is no longer around to teach them.
(via Eric Schiller)