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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?"
Caffeinated sushi. *drool*
Neither the summary nor the linked article said the amounts, but they are listed in the original paper. 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.
"First they came for the slanderers and i said nothing."
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.
Koalas. They're telepathic. Plus, they control the weather. -Margaret
So that's why the dolphins are talking so fast. I can't even understand them.
Maybe the caffeine is getting some extra kick from some Japanese cesium.
I know it has a few health benefits, but it's just too bitter.
One benefit is making you think "bitter" is tasty. The second, and more important one, is the prevention of lack-of-coffee headaches.
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Not buying it.
An 8 oz cup of coffee is 236.5 ml and has 49mg of caffeine. Assume the entire thing was thrown away undrunk at all. The population of portland is about 600k. If we assume that everyone in portland throws away one full cup of coffee every day for 100 years and that every drop ends up in the ocean, that's 21.9b cups of coffee or approx 1 billion grams of caffeine.
100 years is plenty of time to diffuse. Its also plenty of times for caffeine to break down but less assume this were magic caffeine and so lasted the 100 years perfectly intact. Since they say the pacific ocean lets say none of it leaves the pacific for the other oceans. The pacific ocean is 7.721473366 × 10^21 liters. So cross multiplying (7.721473366 × 10^21× ) x (.049 g) / (.2365 l) us that that we are 1.6x10^20 grams so your billion grams falls 1.6x10^11 short. OK well lets assume that in addition to not breaking down it also doesn't diffuse. The Pacific is 361.1m kilometers in area. So lets assume that all the coffee hangs out for the entire century in the 2 kilometers nearest Portland, we still are short by 3 full orders of magnitude.
There is no way a bunch of 600k humans use enough coffee for the ocean to notice.
Caffeine in the water? This should be a wake up call!
"National Security is the chief cause of national insecurity." - Celine's First Law
that human coffe/tea consumption and pee will have an effect on the world's oceans.
Q: Why did the hipster burn his lips drinking his coffee/tea?
A: He wanted to drink it before it was cool...
Tea contains tanin, which blocks the absorption of caffeine. This typically means that you get an immediate caffeine kick from coffee, which then wears off, while tea gives you a slower release of a smaller amount over a period of a few hours. Add to that, after regular consumption you build up a tolerance for caffeine and so won't experience any effects (other than withdrawal if you stop having any), but if you regularly drink tea then you won't be used to the sudden jump in caffeine levels. Oh, and much of the effect of caffeine is psychological. A study a few years ago found that people who unknowingly drink decaf also exhibit the symptoms that they expect from coffee, right up until the point that withdrawal kicks in (and, in some people, the withdrawal is so mild that they don't notice).
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