03 September 2026
Fossil Fuels And The Bulk Freight Market (And More)
27 March 2026
Cleaner Diesel As An Interim Solution
This is potentially a quick interim fix to diesel pollution that could be quickly adopted at the refining industry level by a handful of major oil companies rather than through vehicle purchases that could take decades to phase in.
Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel. During combustion, the water rapidly vaporizes, triggering micro-explosions that improve fuel mixing and lower combustion temperatures.
Studies show this technique can slash nitrogen oxide and soot emissions by more than 60% while sometimes even improving engine efficiency. Because it works in existing engines without redesign, it could provide a quick path to cleaner diesel use.
19 August 2025
The Safety Of Trains v. Cars and Trucks
Highway-rail grade crossings are intersections where highways cross railroad tracks at-grade. Approximately 212,000 highway-rail grade crossings exist on the approximately 140,000 miles of track that make up the United States’ railroad system.
It is illegal to access private railroad property anywhere other than a designated pedestrian or roadway crossing. Trespassers are most often pedestrians who walk across or along railroad tracks as a shortcut to another destination. Some trespassers are loitering or are engaged in recreational activities such as taking photographs, jogging, bicycling, hunting, or operating recreational off-highway vehicles (ROVs). Riding ROVs along railroad tracks leads to the erosion of an important part of the track foundation known as ballast, or the rock and soil material that supports the ties and rail.
But, this definition is awfully harsh. From a pedestrian's perspective, it is often much safer to walk across or along railroad tracks away from a designated roadway crossing, than it is to cross at a highway crossing where there is much more frequent and less noisy car traffic, or across open ground away from the railroad right of way (indeed, railroads that are no longer in use are often converted to pedestrian trails for just this reason) which may constitute trespassing on private property (which is dangerous in much of rural America) and is sometimes uncleared brush.
Sticking to official pedestrian routes is challenging. Many rural areas have no sidewalks, and walking along rural roads at night can be much more dangerous than walking along railroads.
Designated pedestrian crossings are extremely very rare outside of dense urban areas and resort areas, because they aren't cost effective in places with little pedestrian traffic and only marginal safety risks to the pedestrians who do without them.
But train tracks have to be crossed somewhere to get from point A to point B in many cases, because tracks often split whole states in two.
In flat farmland, highway crossings are often a mile to six miles apart, and highway crossings can be even more sparse in mountains, forests, wetlands, and deserts.
These detours can be tolerable in a car or a motorcycle, but represent immense delays relative to crossing a train track away from a highway crossing for a pedestrian who may have to cross that track to get to school or work or a friend's house on a regular basis.
So, simply writing off people who are simply meeting the strict FTA definition of rail right of way trespassing as "at fault" is really unreasonable, blames the victim, and unreasonably protects railroad operators from legal liability when the common law "Learned Hand" test for negligence liability (i.e. that the probability adjusted risk of harm is greater than the cost of a measure that would prevent that harm) would hold railroad operators liable for these injuries if they didn't take reasonable and cost effective measures to prevent them.
In the face of unreasonable trespassing definitions and regulations of pedestrians near train tracks, even extremely expensive preventative measures, like tall fences, will be routinely circumvented. And, authorities won't do much to prevent the harm, because the authorities seeing the situation up close will be aware that these work arounds that circumvent overkill prevention measures like tall fences, will mostly do more good than harm.
Also, my intuition is that ordinary pedestrians walking across or along railroad tracks, especially in rural and suburban areas, are not at all typical of people who are killed in rail accidents, because it is so easy to hear trains coming and because it is so easy in most cases to get out of the way. I suspect that these cases probably actually make up less than 10% of rail accidents involving pedestrians, even though the FTA itself admits on its own website that this is the predominant form of "trespassing" in rail right of ways.
Instead, I suspect that the typical cases that result in serious injury or death are very different.
Maybe the pedestrian is a young child to little to appreciate the risk of being on train tracks when one can hear a train coming. Maybe the pedestrian is deaf or wearing headphones.
Maybe the pedestrian falls asleep on the tracks while drunk, on drugs, or homeless, mistakenly thinking that this particular track which has low frequency traffic has been abandoned entirely. Maybe the pedestrian has been assaulted or knocked unconscious and left on the tracks.
Some of these cases may be close to the boundary between reckless behavior indifferent to the grave risk that they will be killed and full fledged intentional suicide a bit like playing Russian roulette.
Maybe the pedestrian is trying to hitch a ride on a freight train and stumbles.
Maybe the pedestrian is on a rail bridge or other part of the right of way where there is no easy place to move and get out of the way of the train when it is coming. Maybe the pedestrian somehow gets stuck on the tracks with a foot wedged into a gap or is trying to rescue someone else.
Ideally, better data would add insight that the official statistics do not, and we wouldn't have to rely on intuition. But, relying in intuition grounded in common sense and lived experience until better data is available, is usually better than taking no action at all until better data is available, especially if the measures suggested by that intuition aren't terribly expensive or difficult to implement.
If my intuition is right and these are the predominant cases of result in rail deaths or injuries to "trespassers", then the broad FTA definition in addition to blaming the victim, also undermines its effectiveness by being so broad that it fails to distinguish between reasonable conduct that is only dangerous in the most freak circumstances and unreasonable conduct that really does pose an extraordinary risk of death which should be actively policed to prevent rail deaths and injuries. By not tolerating reasonable conduct, the overbroad definition undermines its own effectiveness at preventing the harms it is designed to discourage.
Distinguishing between "safe trespassing" within the FTA definition and "unsafe trespassing" within the FTA is also critical to determining what kind of preventative measures could reduce rail right of way deaths and injuries.
Possible Infrastructure Based Solutions To Reduce Harm
If the real problem is predominantly people who fall asleep or are otherwise unconscious or stuck or inert on train tracks away from highway crossings, then the solution might be to periodically put something like a LIDAR sensor along active train tracks that warn the train operator of the obstruction in time to stop the train (which could take more than a mile of warning about a minute before the train reaches that point), which would prevent not only deaths to trespassers, but also train collisions with fallen trees, large sleeping wildlife (for which "cow catchers" were designed in an earlier era), and debris carried there by a storm. These preventative measures weren't really technologically feasible or cost effective in the late 19th century and early 20th century when existing freight rail systems were invented. But now, these kinds of sensors and a way to send their signals to trains on the routes are cheap and easy to retrofit commercial off the shelf technologies that require only minor modifications for this application.
At crossings, something like a LIDAR system, or even just an "emergency stop" switch that someone could activate in the highway crossing infrastructure, could reduce the number of collisions arising from vehicles stuck at a highway crossing. Even if the warning was transmitted to the train when it was too late to come to a full stop, on oncoming train aware of an imminent collision could slow down as much as possible and activate maximum warning sirens to mitigate the magnitude of the harm from an unstoppable collision and could alert first responders so that they could on their way to the scene of the nearly inevitable collision before it even happened, in situation where every moment counts in saving someone's life.
If a big part of the problem is people who are deaf or wearing headphones, bright, flashing, motion sensor activated lights that only go off when trains are actually coming, located away from highway crossings, which are also cheap, easy to retrofit, commercial off the shelf technologies could do the trick, and might even reduce the need for loud train horns in the middle of the night.
The solutions above would be cheap, and could be implemented at a very manageable cost by railroad operators in response to newly adopted safety regulations (which would prevent a race to the bottom by profit minding companies competing with each other) over a period of perhaps five or ten years.
If the problem is people trying to hitchhike on train cars, hobo style, maybe a partial solution would be to design train cars so that they are difficult to ride or mount, without ladders or anything else to grip, and with the top of enclosed freight cars designs with pitched roofs that are too steep to rest upon for any length of time.
This would be very expensive to retrofit, but if the new design standards were imposed only prospectively to newly purchased freight cars as they were replaced over their useful lives, the new design would probably not be much more expensive than the old one, and as the percentage of new design cars increased over time, the entire strategy of hobo style hitchhiking on freight trains would grow increasingly less popular.
This gradual replacement would also dovetail with reduces consumption of coal, which is the single largest component of of rail freight, in favor of renewables, nuclear, and natural gas transported by pipeline, and declining consumption of liquid fossil fuels (another major component of rail freight) as electric vehicles gradually replace internal combustion engine vehicles, with freight rail instead being used to ship more containerized cargo.
Regular underpasses or overpasses for wild animals might not save many human lives but might prevent train collisions with wild (or domestic) animals that are unable to get out of the way in time or don't realize the risk, which is surely something that both conservationists and train operators would appreciate, which is fundamentally, very low tech, like Roman Empire class civil engineering. But these measured could potentially be quite expensive to retrofit into existing rail lines. Still, good data on "rail kill" could identify the areas where these kinds of collisions are most common so that the investment in these solutions could be implemented first where it would do the most good, and these standards could be established for new rail lines (mostly proposed high speed rail lines).
Admittedly, none of these measures would be very effective against someone who is simply reckless to the point of being virtually suicidal, or someone who is actually suicidal.
For these cases, a highly targeted campaign of public service announcements, that focuses only on the conduct that other preventative measures can't deal with, that actually is high risk, in channels that the people most likely to act this way are most likely to hear and take seriously may be the best possible solution - a bit like the campaigns in the 1980s about drunk driving and the importance of having a designated driver. A PSA campaign probably wouldn't be as effective as some of the new safety infrastructure suggested in this post, but it would almost surely make some difference if it was well done.
05 August 2025
The Proposed Mega Sports Complex For Douglas County
The Project
The controversial Zebulon Regional Sports Complex in Douglas County is set to break ground this fall. It is a $1.3 billion project planned for a site near Chatfield Reservoir in a brownfield development with "an old dynamite-making plant that operated for decades at the proposed Zebulon site" although it purportedly has been fully remediated. The state signed off on that conclusion in 2022.
The plans for the Zebulon Regional Sports Complex are huge.On the drawing board are four baseball fields, three ice rinks and a pair of soccer fields. Eight to 10 basketball courts — which can be converted into 20 volleyball courts or 30 pickleball courts — are also in the mix. Add in a 400,000-square-foot, domed indoor sports facility that will house more fields for year-round play. . . .And that’s just the first phase, which could break ground as soon as this fall on a 50-acre parcel just southeast of the master-planned Sterling Ranch community. Later phases could bring as many as eight additional sports fields, along with restaurants, shops and a hotel[.]
[A] citizen survey conducted last year by Douglas County ... revealed [that] a “mega-sports complex” was identified by 33% of respondents as the “least appealing option” of a list of potential amenities. The survey also showed that just 22% of respondents were dissatisfied with the number of youth sports facilities in the county.
29 May 2025
Long Haul Amtrak Trips Still Make No Sense
A nonstop flight from New York to San Francisco emits, on average, about 840 pounds of carbon dioxide per economy class passenger, according to Google Flights, whose data is independently reviewed. That’s equivalent to burning 420 pounds of coal, or more than the annual emissions of someone living in Cameroon. Air travel is wildly polluting.But what about trains? I tracked down several estimates of carbon emissions per passenger-mile, including Amtrak’s official estimate. What I got back: My cross-country train journey had emitted somewhere from 950 to 1,133 pounds of carbon dioxide per passenger.What!?There are a few reasons for this result. Amtrak is far cleaner than flying where its tracks are electrified, along the Northeast Corridor, from Washington to Boston. But outside the Northeast, Amtrak trains run on diesel, a highly polluting fuel.What’s more, Amtrak’s trains are decades old. (Its single-level Amfleet cars were built in the late 1970s.) Add to that generous seat pitches, large old-fashioned private rooms for longer-distance trains, a longer, winding route across the country and “per-passenger-mile emissions go through the roof,” said Justin Roczniak, a co-host of “Well There’s Your Problem,” a podcast about engineering.Amtrak is still the more climate-friendly option for the vast majority of travelers, who on average travel 300 to 400 miles, said Olivia Irvin, a spokeswoman for the rail company. (That is, not many people are crazy enough to go cross-country by train.) A 2022 Department of Transportation study found that traveling by train from Los Angeles to San Diego generated less than half the emissions, per passenger, of flying, or driving. For Boston to New York, an electrified route, taking the train generated less than a fifth the emissions of flying or driving.It’s when journeys start getting longer than about 700 miles that planes start to gain an advantage on trains. Planes burn the most fuel when they take off and climb to altitude. That makes short flights very inefficient — you’re burning all that fuel only to travel a short distance. (Some countries, like France and Spain, have tried to ban the shortest flights when rail alternatives are available.)Longer flights also tend to use larger aircraft, which provide economies of scale. And aircraft have become more fuel-efficient over the years. But choosing flights with several connections, for example, can quickly add to your footprint, because you’re taking off and landing multiple times.
From the New York Times.
15 May 2025
Residential HVAC Economics And Environmental Considerations
I live in a 100 years old house in central Denver with natural gas boiler driven steam heat radiators (the steam heat boiler was originally coal fired, which is not an option now, then converted to gas, and then replaced) and a swamp cooler. (I'm looking at this now because my 24 year old swamp cooler is replaced for the first time today.)
Is this the best choice from a cost perspective?
Yes.
Is this the best choice for the environment?
Probably, although a heat pump is quite competitive from an environmental perspective and will grow more attractive as the power grid in Colorado becomes greener over the next decade or two.
09 March 2025
Personal Reflections
* This year I'm going to be a sag wagon husband, taking my wife to her Horsetooth Half-Marathon in Fort Collins in April (one of the most difficult half-marathons there is, due to extreme elevation changes in the course) and to the New York City Marathon in November. As I write this post, my wife is doing an 18.5 mile training run for the 13.1 mile Horsetooth race.
* This year, our house which we bought twenty-five years ago turns 100 years old. We've been generally good stewards of it. Its fair market value is more than triple what it was when bought it. But our twenty-five year old swamp cooler is due to be replaced, so we'll do that this spring. I'll be getting bids next week. We're suffering from renovation and repair fatigue, however, after several major projects, so we may pause that, apart from landscaping (to eventually kill the lawn and replace a badly weather damaged back patio gazebo), for a while.
* We could find ways to pay off our small mortgage faster than it is scheduled to be paid off with increased principal payments, if we felt an urgent need to do so. But why waste an ability to borrow money at a 3.625% fixed rate with tax deductible interest that helps our credit rating, while inflation eats away at the inflation adjusted value of the loan principal every year? The money that would be used to pay off the loan can be invested instead for better returns, even in very safe bond investments (or even if it were in high return FDIC guaranteed CDs).
* We've received our compost bin as part of a new City of Denver program that has finally come into being. It takes a little getting used to in daily life to split waste into three categories instead of two and we've thrown out some waste that should be composted. But, we'll get the hang of it. The City also didn't pick it up the first time we put it out on a collection day for some reason.
* In contrast, we've pretty much gotten used to the new policy of having to bring reusable bags to the grocery store or pay a 10 cents per disposable bag tax on that formerly free service.
* One of my two cars has been unofficially the kids car for a long time, but this year, we will officially be a one car household as title to our kid's car is passed down to the next generation.
* My Nissan Juke will hit 60,000 miles right around the tenth anniversary of purchasing it this year and is in pretty much perfect condition, except for some cosmetic hail damage that we don't plan on fixing.
* The only thing the Juke lacks that I would actively like to have is a blind spot detector. I wonder how hard it is to add one on an aftermarket basis.
* If I drove in the mountains more, I'd get snow tires, as the Juke is otherwise a perfect snow car. But I don't drive in the mountains all that much, and Denver doesn't get enough snow to justify snow tires, in lieu of all weather tires with a decent tread.
* My plan is to replace my Juke with an EV (not a Tesla) sometime after the next generation of far superior solid state batteries enter the market, the Trump tariffs have been repealed, and the national charging network is better, perhaps five to ten years from now. This will require emptying the garage (which currently has so much stuff stored there that there is no room for a car), moving the garage stuff to a new backyard shed, and installing an EV vehicle charger (which Denver's building codes now require in new garages, I've heard). The new EV could very well end up being my last car.
* Incidentally, even though Nissan sells decent enough EVs, it's looking like there's a good chance that Nissan won't exist anymore by the time my next car purchase rolls around. The company is in dire straights, and a contemplated merger with Honda has apparently fallen through.
* Also vaguely car related, I have dropped SiriusXM, which my car is equipped to receive. I almost always listen to Spotify using Bluetooth to my cell phone instead when I'm out and about, and don't drive enough in places with no cell phone access to justify keeping it.
* My generation has seen vinyl records, cassettes, CDs, iPods, videocassettes, large format video disks, DVDs, 5.25" floppy disks, 3.5" floppy disks, CD-ROM, DVD-ROM, hard drives with actual disks in them, and analog broadcast television all come and go (we were too young to really experience 8-track tapes). We have seen digital broadcast television, digital radio, dead tree format newspapers and magazines, large movie theaters, satellite TV (first with large dishes and then with smaller ones), short wave radio, land line phones, pay phones, pagers, slow speed intercity passenger rail, paper checks, personal letters, "dumb" Blackberries and flip phones, and home yogurt makers, lose their shine too. Denmark's Post Office is discontinuing letter delivery at the end of this year and taking away all of its post boxes. Analog FM and AM radio are also just dying a slow and gradual death (especially AM radio). Wrist watches used to be a daily necessity and are now jewelry and a fitness tracking device. Vinyl records are actually coming back, but it's a niche thing that probably won't get big. We saw supersonic commercial flight come and go, but it looks like it will return soon, beyond a niche. So, seeing satellite radio start to lose its relevance too isn't all that shocking.
The story of AM radio over the last 50 years has been a transition from being the dominant form of audio entertainment for all age groups to being almost non-existent to the youngest demographic groups. Among persons aged 12–24, AM accounts for only 4% of listening, while FM accounts for 96%. Among persons aged 25–34, AM accounts for only 9% of listening, while FM accounts for 91%. The median age of listeners to the AM band is 57 years old, a full generation older than the median age of FM listeners.
From a 2009 Federal Communication Commission report (via Wikipedia). A person who was a median aged AM radio listener in 2009 is now 73 years old. Baby Boomers are between the ages of 61 and 79 in the year 2025. As of 2024, the average AM and FM radio listener combined is 57 years old, and 62% of all AM and FM radio listeners combined are 55 years old or older. AM/FM radio formats that were historically mostly AM like talk radio and religious programming, have the oldest listeners (although Spanish language radio formats which were also historically AM dominated have younger than average listeners, and country music formats are only a little older than that).
* I've also decide not to renew my digital Washington Post subscription this month, even though I've read it regularly since college, because the editorial interference of Jeff Bezos in the paper is undermining the quality of the product. I'll probably remove it from the sidebar of this blog as well.
* Today is the start of daylight savings time. I would eliminate it and have standard time all year round if I could. There is nothing wrong with changing the time that businesses and governments open and close during the course of the year if particular businesses and governments want to change that on a seasonal basis.
* My new office, across the street from Shotgun Willies, is so far a success. At a recent deposition I hosted there, that went smoothy from a logistics perspective, opposing counsel and her paralegal were plotting and scheming about how to get a coffee maker a nice as mine for themselves.
* Evidencing my progressing older age, I got a colonoscopy last month. It went fine and I don't have cancer, but it isn't something that I'm looking forward to the next time it is scheduled, a few years from now. The pre-procedure purging is harrowing.
* In very positive news, they are on the brink of introducing a new and affordable screening test for pancreatic cancer, which was the main cause of death of my father, his brother, and two of my not related by blood aunts. If there is a genetic risk factor, my brother and I probably have it, and we will probably live to benefit from this screening test. In even more positive news, they are close to being able to provide a pancreatic cancer "vaccine" that would prevent some subtypes of pancreatic cancer, although this isn't quite as imminent.
* It is a relief that both of our children have finished college, secured good jobs in the tech sector, established themselves in their own apartments, and found good relationships with significant others.
* It would be nice if they could buy homes for themselves, but the housing market is the toughest for buyers that it has been in at least thirty-years right now, due to a surge in mortgage interest rates, while home prices mostly remain sticky at prices established when mortgage interest rates (and hence home affordability) were half what they are now.
* We've very much enjoyed being able to see our children's significant others this year. We'd welcome their upgrades to official son-in-law and daughter-in-law status, but that's up to the kids to decide. We are proud of the progress that our daughter's boyfriend has made toward becoming a Chartered Financial Analyst®, and are excited about our son's girlfriend's first half-marathon in the District of Columbia next weekend that she is just finishing her training to prepare to run.
* My official running competitions have been limited to 1 mile fun runs and 0.5 km races with donuts at the half-way mark.
* I'm more ambivalent about my daughter's new dog, Oakley, because, as most people who know me are aware, I'm not a dog person. But, I'm learning to tolerate him.
* Both my nephew and the daughter of a dear friend of the family are applying to colleges this year. They have gotten out all of their applications, and have received acceptances and rejections from some schools so far. Even if none of them remaining responses are acceptances, they each have decent options. Over the next month or so, they'll each hear from some remaining schools that haven't given them an answer so far and they'll make their big decisions. For different reasons, neither will be going to schools in red states.
* Next year will be senior year for both of my nieces, so we'll get to watch the process of them deciding what to do after high school again next year as well, from front row seats. My brother and his wife will probably move to a different home in the Boston metro area once they become empty nesters.
* On July 3, 2025, less than four months from now, this blog will be 20 years old.



