Showing posts with label plastic. Show all posts
Showing posts with label plastic. Show all posts

Friday, October 9, 2020

Flashback – Plastic Straws

I originally called this one "How Much We Take On Faith." At the time it was clear that many information sources are not reliable, a notion reconfirmed by many experiences since then. Politicians, advocates and pundits confidently make assertions to support their agendas. We can never tell what is true, what is pure fantasy, or how much is just so much hot air. 

 

Plastic straw mandates are examples of many symbolic acts. Using bad data or no data, authorities try to fool us, and probably themselves, into believing that they are really making a difference. They want to appear caring about all the right things, then garner enough support to pass laws and regulations forcing everyone to comply.

 

Here is the piece from 2018.

[The other day I got into a discussion with a colleague about plastic, which led to a comment about the amount of plastic in the ocean and what a problem it is. My response that only about 1% of the ocean plastic comes from the United States was met with stares of disbelief. Instead of arguing the point with someone who firmly believed the opposite, I offered to send references. The next day I emailed an explanation of the situation from a number of reputable sources.

From National Geographic in a story about the large accumulation of waste in the Pacific: "Microplastics make up 94 percent of an estimated 1.8 trillion pieces of plastic in the patch. But that only amounts to eight percent of the total tonnage. As it turns out, of the 79,000 metric tons of plastic in the patch, most of it is abandoned fishing gear—not plastic bottles or packaging drawing headlines today."

My next stop was a Bloomberg article with a sub headline of: “Skipping straws may be hip. But there are much better ways to fight pollution.” They first point out that the original estimate, the one activists and news media cite with confidence, that Americans use 500 million straws per day is based on highly dubious data that came from a small survey by a nine-year-old for a grade school science project. Then it was spread without any attempt to verify it by those who wanted to emphasize the problem. "Similarly, two Australian scientists estimate that there are up to 8.3 billion plastic straws scattered on global coastlines. Yet even if all those straws were suddenly washed into the sea, they'd account for about .03 percent of the 8 million metric tons of plastics estimated to enter the oceans in a given year.” So what we have been told about straws being the problem is a gross exaggeration.

A Science report on marine pollution verifies exactly what I was saying with a table on their site,  Table 1 titled: “Waste estimates for 2010 for the top 20 countries ranked by mass of mismanaged plastic waste (in units of millions of metric tons per year).” The US is listed at the bottom of the table with a contribution of .09% – less than one percent. That same information is repeated in pie charts on other sites.

So all this fuss about banning straws is bogus. It is a feel-good exercise that grows because so few people take the time to do the research. Ocean pollution is a problem, but the advocates and politicians are misinformed and are passing along that poor information to the rest of us – and we are buying it.

This and many other trends and movements have become their own religions. They depend on blind faith. The preachers stand up and confidently make ignorant and absurd allegations about chemicals, food safety, pollution, economics and a host of other subjects. The general population takes it on faith, chanting “amen” in all the right places. This leads to poor policies and results in those responsible for poor policies being reelected on the basis of making their followers feel good about themselves, about how pure they are, about how caring they are. It’s much more about ego and self esteem than science or actually saving the planet.

In reality these policies deliver little or no benefit and may have unknown side effects or unforeseen consequences. They are at best a waste of time. Critical thinking is the answer, but no one wants to deal with facts or reality.] Feeling good is more important.

Friday, June 5, 2020

Flashback - Unbelievable Numbers?

[Almost a year ago I wrote about the statistics that politicians, pundits and experts spread without any support. They are repeated to the point where everyone accepts them as gospel, and no one bothers to check. It happens often. These are just a few that I highlighted at the time.]

Politicians and other entities trying to raise awareness to one or another kind of problem or injustice love to toss out surprising numbers to gain support for their cause. In many cases these are not real numbers. They could be based on data collected by the program itself with no effort to be unbiased, in fact, the more shocking the better. They may have been based on a single survey that made no effort to confirm results, and may directly conflict with the results of similar surveys. Like the unverified number of discarded plastic straws that was really based on a small survey for a grade-school project that led to such an uproar, the numbers are often repeated so many times by so many people that everyone assumes they are correct. 

With so many examples, how can we tell what to believe?

Everyone knows that ten thousand steps per day is the recommended amount to stay healthy and to boost longevity – or do they? This NPR piece tells us “the idea of walking at least 10,000 steps a day for health goes back decades to a marketing campaign launched in Japan to promote a pedometer” and is not some kind of magic number. In a recent study published in JAMA, older women who averaged 4,400 steps per day were better off than those taking only 2,700, with little or no benefit over about 7,500 steps. This finding was confirmed elsewhere.

The myth of 10,000 daily steps is akin to 8 glasses of water daily. There is no basis. Someone made it up. The best advice, to drink when you are thirsty, continues to be drowned out by the “hydration parrots” who swear by 64 ounces.

Other examples include the unacceptably high number of school shootings. The Campus Safety Magazine puts the number for 2018 at 82, “the highest there have ever been since 1970.” They mention that the second highest was 59 in 2006, so it can hardly be called a trend, perhaps more of a blip. They then state that the majority didn’t happen on school property – indicating a rather loose definition of school shooting. Compare that to the Wikipedia list of each occurrence by location with a total of only 36 for the same year.

A Time article calls into question the widely circulated number of one in five women in the US having been raped. They call that number misleading noting “the striking disparity between CDC figures and the Justice Department’s crime statistics based on the National Crime Victimization Survey (which includes crimes unreported to the police).” This article provides much detail and there is room for doubt (as I pointed out earlier), yet we continue to hear the same number.

Of course everyone also knows that crime and teen pregnancy are worse than ever – not so fast! “Violent crime in the U.S. has fallen sharply over the past quarter century.” Here is a link to that Pew survey from earlier this year showing several graphs on violent and property crimes all heading in the right direction, although you’d never know it from the news coverage. That explains why the public perception is the opposite. Likewise a site called the Seeker reports, “the fact is that teen pregnancy is low and has been dropping.”

Can the recent increase in tornados be attributed to Climate Change? This article from a Carbon Brief posting calls it highly uncertain – with references to the data. “What is clear is that there is no observable increase in the number of strong tornadoes in the US over the past few decades,” adding: “Any role for climate change in affecting the conditions for tornado formation is still very much an open question and the subject of ongoing research by the scientific community.”

Finally, are there more black men in prison in the US than in colleges and universities? It’s a handy throwaway line for a speech emphasizing victimhood, but I picked that one apart very nicely about 5 years ago.

We can’t rely on the orators, advocates, media and advertisers to get it right. Use critical thinking. Question everything.

Friday, October 12, 2018

How Much We Take on Faith

The other day I got into a discussion with a colleague about plastic, which led to a comment about the amount of plastic in the ocean and what a problem it is. My response that only about 1% of the ocean plastic comes from the United States was met with stares of disbelief. Instead of arguing the point with someone who firmly believed the opposite, I offered to send references. The next day I emailed an explanation of the situation from a number of reputable sources.

From National Geographic in a story about the large accumulation of waste in the Pacific: "Microplastics make up 94 percent of an estimated 1.8 trillion pieces of plastic in the patch. But that only amounts to eight percent of the total tonnage. As it turns out, of the 79,000 metric tons of plastic in the patch, most of it is abandoned fishing gear—not plastic bottles or packaging drawing headlines today."

My next stop was a Bloomberg article with a sub headline of: “Skipping straws may be hip. But there are much better ways to fight pollution.” They first point out that the original estimate, the one activists and news media cite with confidence, that Americans use 500 million straws per day is based on highly dubious data that came from a small survey by a nine-year-old for a grade school science project. Then it was spread without any attempt to verify it by those who wanted to emphasize the problem. "Similarly, two Australian scientists estimate that there are up to 8.3 billion plastic straws scattered on global coastlines. Yet even if all those straws were suddenly washed into the sea, they'd account for about .03 percent of the 8 million metric tons of plastics estimated to enter the oceans in a given year.” So what we have been told about straws being the problem is a gross exaggeration.

A Science report on marine pollution verifies exactly what I was saying with a table on their site,  Table 1 titled: “Waste estimates for 2010 for the top 20 countries ranked by mass of mismanaged plastic waste (in units of millions of metric tons per year).” The US is listed at the bottom of the table with a contribution of .09% – less than one percent. That same information is repeated in pie charts on other sites.

So all this fuss about banning straws is bogus. It is a feel-good exercise that grows because so few people take the time to do the research. Ocean pollution is a problem, but the advocates and politicians are misinformed and are passing along that poor information to the rest of us – and we are buying it.

This and many other trends and movements have become their own religions. They depend on blind faith. The preachers stand up and confidently make ignorant and absurd allegations about chemicals, food safety, pollution, economics and a host of other subjects. The general population takes it on faith, chanting “amen” in all the right places. This leads to poor policies and results in those responsible for poor policies being reelected on the basis of making their followers feel good about themselves, about how pure they are, about how caring they are. It’s much more about ego and self esteem than science or actually saving the planet.

In reality these policies deliver little or no benefit and may have unknown side effects or unforeseen consequences. They are at best a waste of time. Critical thinking is the answer, but who wants to deal with reality?

Friday, September 28, 2018

Environmentally Friendly?

Most people don’t know where most of our products come from – what raw materials are used, how they are manufactured, etc.   That makes it very hard to judge what is and is not environmentally friendly.

A few years ago some analysis revealed that a holistic assessment of ethanol’s environmental footprint from planting and harvesting through the point of burning it as a fuel in automobiles might be worse than the same consideration for gasoline. The farming, refining and transportation end of the businesses are also relevant. And as it burns it releases the same CO2 into the atmosphere at almost the same levels on a per-mile basis.

The same is true of many other products. That’s why I wasn’t surprised by the news that plastic grocery bags could be better for the environment than organic cotton ones.

That news came last spring from a study conducted by the Danish Environmental Protection Agency (DEPA). They measured the environmental impact of the standard plastic bag against “the organic lifecycle of seven common materials used for shopping bags…along 16 different environmental parameters, including climate impact, ozone impact, human and environmental toxicity and water use.”

According to the DEPA spokesperson, “The results showed that plastic bags made out of ‘LDPE plastic’, like the ones found in grocery stores, have by far the lowest impact on the environment. The biggest environmental impact was assigned to the organic cotton bag; it has to be used at least 149 times to offset its climate impact, compared to 43 times for a regular paper bag.” Note that people often buy the “organic” cotton believing they are doing the environment a favor.

At the end of the report, they recommended that any bag should be reused as many times as possible, for example, using the plastic grocery bags to line small trash cans. Note that if they were reused even once, would they be almost 300 times environmentally friendlier than an organic cotton bag? 

But it doesn’t end there!  Remember those reports earlier this month about the researchers at the Helsinki-Vantaa Airport, the main airport in Finland, finding that the place most filled with germs and bacteria was not the toilet seats but the trays used in the pre-flight screening process? They were teeming with disease-causing viruses. The same can be true of reusable cloth grocery bags and shoppers don’t realize that danger or guard against it.

As the Chicago Tribune reports: “Most shoppers -- 97%, in fact -- reported that they do not regularly, if ever, wash the bags.” About 75% report that they do not use separate bags for meats and for vegetables, while almost one-third use the same bags for other non-food items.
When they tested a sample of the bags (84) for bacteria, they found some contamination in all but one.  The full report can be found at Assessment of the Potential for Cross Contamination of Food Products by Reusable Shopping Bags.

"It is estimated that there are about 76,000,000 cases of foodborne illness in the United States every year. Most of these illnesses originate in the home from improper cooking or handling of foods. Reusable bags, if not properly washed between uses, create the potential for cross-contamination of foods.” And if they must be washed between uses, that further adds to their environmental impact by water use, and it shortens their life.
  
So while some cities and states are moving to ban the bags, they are not considering all the diverse factors that go into the problem. It’s pretty typical of legislators to pass laws that address a surface problem to make them and their constituents feel good, while ignoring many details that might lead to an opposite conclusion.

Friday, August 10, 2018

Food For Thought

Here are just a few items I have been wondering about.

A common excuse for bad behavior in politics and business is that someone else did it first or the other party started it. Doesn’t that ever strike you as the kind of response you would expect from a couple of third graders arguing on the playground? ("Did not!" – "Did too!" "He started it!") Don’t we deserve better from our leaders? Unfortunately in many cases, before the leaders can say it, their advocates on social media have already started looking for comparisons. Does the liking it and sharing it make us all more like third graders?

Has anyone ever seen something go viral that actually teaches people something or makes them think about an idea? I suppose the “stupid people tricks” might hint at teaching people not to try it at home (or anywhere else), but most of us don’t have to see someone else figuratively “crash and burn” to know what is dangerous. Those videos are obviously for entertainment value rather than instruction. Thinking is not something people do for fun, so we stick with the cute pets, fluffy wildlife, heartwarming stories and YouTubers selling us items we don’t need.

And speaking of entertainment value and oddities going viral – isn’t it interesting that the fad of encountering aliens from outer space, common in the 1950s, vivid descriptions of little green men with large eyes and foreheads, has disappeared? There are so many cell phones with cameras and so many people taking pictures of almost everything they see that if those space aliens were really among us, we would have been exposed to a boatload of selfies by now. I guess the search for intelligent life in the universe goes on – whoops, did I leave out the word “elsewhere”?

I have never thrown a plastic straw into the ocean and never intend to do so, so why can’t I use one? I have accidently dropped a plastic bottle and been thankful it was not made of glass. Once again, it’s not the plastic; it’s the behavior.

Finally, the fuss about the price of gas around the holidays seems to be mostly manufactured by the news media. It happened for Independence Day; expect to see it again for Labor Day. “The price of gas is 60 cents higher than a year ago, what are people going to do? Will anyone be able to afford to get away?”

The average mileage for a car/light truck in the US this year is about 25 mpg. A 60-cent-per-gallon increase adds $2.40 to a 100-mile trip. A 400-mile round trip for the weekend comes to less than ten extra dollars – less than two beers at any major league ballpark in the country or slightly more than a single movie ticket. Remember, that’s based on average mileage, so half the driving public is even less affected. But when they ignore the details and just target people’s emotional gut reaction, it sure makes a good story.