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The Pacific Ocean Is Polluted With Coffee
An anonymous reader writes in with this excerpt from Inhabitat:"People aren't the only ones getting a jolt from caffeine these days; in a new study published in Marine Pollution Bulletin, scientists found elevated concentrations of caffeine in the Pacific Ocean in areas off the coast of Oregon. With all those coffee drinkers in the Pacific Northwest, it should be no surprise that human waste containing caffeine would ultimately make its way through municipal water systems and out to sea – but how will the presence of caffeine in our oceans affect human health and natural ecosystems?"
While this is not surprising and questionably news, I am a little more worried about the years and years of synthetic, biologically active drugs in the water. Birth control hormones don't exactly just disappear after you swallow them, and I know that they and other classes of petroleum based drugs have shown hormonal activity not only in mammals, but amphibians, fish, and birds. Though a world with huge breasted marine mammals would be cool, I am more concerned about the chemicals other than coffee that are following the same pathways and reaching the entire world. Miles deep into the ocean, thousands of miles through the atmosphere, there is really no where on the planet that has not been affected in at least a minor way by the expansion of human industry.
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In the ocean, they found 44.7 ng/L. "Caffeine concentrations in rivers and estuaries draining to the coast measured up to 152.2 ng/L." For those who like their numbers in ppm, I believe that's .0447 ppm and .1522 ppm, respectively. Sometimes I fail at math, though.
Serious question: Caffeine is a naturally occurring substance... were they expecting 0g / L?
What is the natural amount of ocean water caffeine; otherwise it is hard to judge the extent of the impact.