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Opinion

When black roofs cost more and most negatively affect our health, why are we installing them?

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12 minute read

We are into construction season and summer and the heat is starting to be an issue. We will have some heat waves and we will notice the “Urban Heat Island Effect”.
The city will seem hotter than the county, but we will also notice differences in temperature between light coloured vehicles and darker coloured vehicles, and even the coolness of a white fence.
During heat waves some of the most vulnerable people are those living on the top floor of a building with a black roof.
My biggest question is why are we still putting black roofs on our buildings? Black roofs do not absorb heat in the winter under a foot of white snow. They absorb heat during the hot days making it hotter.

Let’s start at the beginning, by hitting the Google button.

What is the Heat Island Effect?
The elevated temperature in urban areas as compared to rural, less developed areas is referred to as the urban heat island effect. As cities grow and develop, more buildings and people are added. The process of urban development leads to this phenomenon.

What are the Implications of Heat Islands?
Heat islands are considered a form of local climate change as opposed to global climate change. The effects of heat islands are confined to specific areas, and do not have a larger impact on climate change. Despite being confined to a certain locality, heat islands can still make a significant impact.
Of course, one of the most noticeable impacts on urban dwellers is an increase in hot, summer weather. On particularly clear and hot days, when the heat island effect is at its worst, inhabitants of larger cities will notice hotter and more uncomfortable temperatures. When people are hot, they often crank up their air conditioners. Increases in air conditioning use not only results in more heat being released into the air, this also contributes to air pollution, as more greenhouse gas emissions are discharged. This negatively impacts air quality and can also lead to a surge in urban smog.
How Can We Reduce the Heat Island?
Since the impact of heat islands is mostly negative, scientists and researchers are searching for ways to reduce and reverse the effects. Dark roof surfaces are one of the major culprits of temperature increases. One popular technique for combating the heat island effect is installing green roofs on urban buildings. Green roofs, which are lined with soil and certain types of vegetation, can actually help cities regain some of the cooling and evaporative effects that the natural landscape once provided. As this idea becomes more popular, there is more and more scientific evidence that green roofs can reduce heat in urban areas.
Dark building surfaces that absorb more heat account for some of the rising temperatures in urban areas. One simple method for reducing this effect is to paint buildings with light or white colors that do not absorb nearly as much heat. Some cities are also using paint treatments that reflect light to combat the heat island effect. White, Green or Black Roofs? Berkeley Lab Report Compares Economic Payoffs
Looking strictly at the economic costs and benefits of three different roof types—black, white and “green” (or vegetated)—Lawrence Berkeley National Laboratory (Berkeley Lab) researchers have found in a new study that white roofs are the most cost-effective over a 50-year time span. While the high installation cost of green roofs sets them back in economic terms, their environmental and amenity benefits may at least partially mitigate their financial burden.
A new report titled “Economic Comparison of White, Green, and Black Flat Roofs in the United States” by Julian Sproul, Benjamin Mandel, and Arthur Rosenfeld of Berkeley Lab, and Man Pun Wan of Nanyang Technological University in Singapore, provides a direct economic comparison of these three roof types. The study will appear in the March 2014 volume of Energy and Buildings and has just been published online. “White roofs win based on the purely economic factors we included, and black roofs should be phased out,” said study co-author Rosenfeld, a Berkeley Lab Distinguished Scientist Emeritus and former Commissioner of the California Energy Commission
The study analyzes 22 commercial flat roof projects in the United States in which two or more roof types were considered. The researchers conducted a 50-year life cycle cost analysis, assuming a 20-year service life for white and black roofs and a 40-year service life for green roofs.
A green roof, often called vegetated roofs or rooftop gardens, has become an increasingly popular choice for aesthetic and environmental reasons. Rosenfeld acknowledges that their economic analysis does not capture all of the benefits of a green roof. For example rooftop gardens provide storm water management, an appreciable benefit in cities with sewage overflow issues, while helping to cool the roof’s surface as well as the air. Green roofs may also give building occupants the opportunity to enjoy green space where they live or work.
Berkeley Lab Distinguished Scientist Emeritus Art Rosenfeld
“We leave open the possibility that other factors may make green roofs more attractive or more beneficial options in certain scenarios,” said Mandel, a graduate student researcher at Berkeley Lab. “The relative costs and benefits do vary by circumstance.”
However, unlike white roofs, green roofs do not offset climate change. White roofs are more reflective than green roofs, reflecting roughly three times more sunlight back into the atmosphere and therefore absorbing less sunlight at earth’s surface. By absorbing less sunlight than either green or black roofs, white roofs offset a portion of the warming effect from greenhouse gas emissions.
“Both white and green roofs do a good job at cooling the building and cooling the air in the city, but white roofs are three times more effective at countering climate change than green roofs,” said Rosenfeld.
White roofs are most cost-effective
The costs and benefits difference stack that has the highest net present value shows the roof type that is most cost-effective.
The 50-year life-cycle cost analysis found that even the most inexpensive kind of green roof (with no public access and consisting of only sedum, or prairie grass) costs $7 per square foot more than black roofs over 50 years, while white roofs save $2 per square foot compared to black roofs. In other words, white roofs cost $9 per square foot less than green roofs over 50 years, or $0.30 per square foot each year.
The researchers acknowledge that their data are somewhat sparse but contend that their analysis is valuable in that it is the first to compare the economic costs and energy savings benefits of all three roof types. “When we started the study it wasn’t obvious that white roofs would still be more cost-effective over the long run, taking into account the longer service time of a green roof,” Mandel said.
Furthermore while the economic results are interesting, it also highlights the need to include factors such health and environment in a more comprehensive analysis. “We’ve recognized the limitations of an analysis that’s only economic,” Mandel said. “We would want to include these other factors in any future study.”
Black roofs pose health risk
For example, black roofs pose a major health risk in cities that see high temperatures in the summer. “In Chicago’s July 1995 heat wave a major risk factor in mortality was living on the top floor of a building with a black roof,” Rosenfeld said.
For that reason, he believes this latest study points out the importance of government policymaking. “White doesn’t win out over black by that much in economic terms, so government has a role to ban or phase out the use of black or dark roofs, at least in warm climates, because they pose a large negative health risk,” he said.
Rosenfeld, who started at Berkeley Lab in the 1950s, is often called California’s godfather of energy efficiency for his pioneering work in the area. He was awarded a National Medal of Technology and Innovation by President Obama in 2012, one of the nation’s highest honours.
Rosenfeld has been a supporter of solar-reflective “cool” roofs, including white roofs, as a way to reduce energy costs and address global warming. He was the co-author of a 2009 study in which it was estimated that making roofs and pavements around the world more reflective could offset 44 billion tons of CO2 emissions. A later study using a global land surface model found similar results: cool roofs could offset the emissions of roughly 300 million cars for 20 years.
So if black roofs are detrimental to our health, contribute to the issue of Urban Heat Island Effect and costs more, why are we still building black roofs?

Daily Caller

John Kerry Lurches Back Onto Global Stage For One Final Gasp

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From the Daily Caller News Foundation

By David Blackmon

John Kerry, one of the grandest and most persistent climate scolds of the 21stcentury, lurched back into the news this week when he was knighted by Britain’s King Charles, a prominent climate scold in his own right.

In fact, their shared efforts involving flying off on carbon-spewing private jets to lecture the masses to live smaller, more costly lives in the name of fighting climate change was the motivation for the award, as the King thanked Kerry for his “services to tackling climate change.” That seems to be a bit of a grammatical error, but when royalty is involved, no one really cares, do they?

“King Charles and I share the same point of view — that there’s an urgency to doing things,” Kerry told the Globe in an interview. “He’s been ahead of most folks on this from the time I can remember… He always had a commitment to nature.”

Unfortunately for the U.K.’s citizens, the Labour government’s “commitment to nature” mainly appears to involve covering thousands of acres of bucolic British farmland with massive solar arrays and felling thousands of forest trees to make home to big wind installations these days.

Projects like those – frequently forced by the central government on objecting rural communities – form the centerpiece of Secretary of State for Energy Security and Net Zero Ed Miliband’s program to deindustrialize the formerly formidable British economy.

That program – based on the shared philosophy of King Charles and Kerry – has sent the U.K.’s utility rates skyrocketing to the highest on earth. It has also rendered the former global power dependent on imports from foreign nations for its energy security, with China the most prominent among them.

Such are the fruits of the King Charles/Kerry “point of view.” Most would agree with Kerry’s statement that “there’s an urgency to doing things.” The problem is that pretty much everything he and the King have been doing in this realm across the first quarter of the 21st century leads inevitably to serfdom to the Chinese Communist Party.

In an interview with the Financial Times the same day, Kerry repeated much of the tiresome dogma of his alarmist religion, in the process excoriating President Donald Trump as a “denier” and calling U.S. corporate leaders cowards for straying from the narrative he and the King prefer.  “It is not that they don’t believe [in climate change] or they don’t want to move forward. They are just scared,” Kerry said of the corporate CEOs, adding, “The process of Donald Trump in the last months, coupled with the justice department, coupled with his vengeance programs, has scared… a lot of people.”

But a more believable alternative explanation for the shift away from the twin manias of ESG and DEI by many companies in recent years is that these corporate leaders have a fiduciary duty to maximize returns on capital to their investors. The problem for Kerry and his disciples is that the preferred alternatives they have advanced too often devolved into unprofitable boondoggles that fail to satisfy that duty. Kerry wants to place the entire blame on Trump – who, ironically, was recently honored by King Charles himself with an unprecedented second state dinner. But the truth is that shift started in earnest in 2023, when Joe Biden’s autopen was still in charge of the ship of American state.

That shift has certainly accelerated this year, as companies have been freed from the incessant hectoring of the Biden government and are now being denied access to the ruinous green subsidies from the IRA that so radically distorted energy markets. This has little to do with climate denialism or cowardice and much to do with sound business practice and CEOs properly carrying out the mandates of their high positions. No amount of hyperbolic talking points from Kerry or the King can change that reality.

In the end, Kerry’s remarks come off as a lot of sound and fury signifying nothing. Now in the twilight of his career, he has become a relic, a totem of a fading global religion whose end cannot come soon enough.

David Blackmon is an energy writer and consultant based in Texas. He spent 40 years in the oil and gas business, where he specialized in public policy and communications.

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Addictions

The Death We Manage, the Life We Forget

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Marco Navarro-Génie's avatar Marco Navarro-Génie

Our culture has lost the plot about what it means to live.

Reading that Manitoba is bringing supervised consumption to Winnipeg got me thinking.

Walk through just about any major Canadian city, and you will see them. Figures bent forward at seemingly impossible angles, swaying in the characteristic “fentanyl fold,” suspended between consciousness and oblivion. They resemble the zombies of fiction: bodies that move through space without agency, awareness, or connection to the world around them. We think of zombies as the walking dead. Health workers and bureaucrats reverse their overdoses, send them back to the street, and call it saving lives.

At the same time, Canada offers medical assistance in dying to a woman who cited chemical sensitivities and the inability to find housing. It has been offered to veterans who asked for support and were met instead with an option for death. We fight to prevent one form of death while facilitating another. The contradiction is not accidental. It reveals something about the people involved and the funding behind it. That’s our culture. Us. It appears to me that our culture no longer knows what life is.

Ask any politician or program bureaucrat, and you will hear them explain, in the dry language of bureaucracy, that the twin approach to what they call harm reduction and medical assistance in dying (MAiD) rests on the shared premise of what they believe to be compassion. They think they respect autonomy, prevent suffering, and keep people alive when possible. It sounds humane. It is, in practice, incoherent. Bear with me for a moment.

The medical establishment administers naloxone to reverse overdoses in people who spend as many as twenty hours a day unconscious. They live without meaningful relationships or memories, with little capacity for choice. The technocrats and politicians call that saving lives. They also provide assisted death to people whose suffering comes primarily from poverty, isolation, or lack of housing. There was a time when these factors could, at least in theory, be addressed so that the terminal decision did not need to be made. Now they are accepted as grounds for ending life.

But why is one preference final and the other treated as an error to correct? That question reflects the deeper disorientation.

We saw the same thing during COVID. Elderly people in care homes were left without touch, family, or comfort for days. They often died in solitude, their dementia accelerated by isolation. And those conditions were inflicted upon them in the name of saving their lives. The “system” measured success in preventing infections, not in preserving connections. Je me souviens. Or we should.

There is a pattern here. We have reduced the idea of saving lives to keeping bodies breathing, while ignoring what makes a life human: agency, meaning, development, and relationship. And in doing so, we begin to define life as mere biological persistence. But to define life by the capacity to breathe and perform basic functions is to place ourselves on the same footing as the non-human animals. It is to say, tacitly, that there is no fundamental distinction between a person and a creature. That, too, is a form of forgetting.

To be clear, the argument here is not that hopeless drug users should be administered MAiD. Instead, it is essential to recognize that the intellectual framework behind harm reduction and MAiD must be taken seriously, as it rests on some rationally defensible claims. In an age where most arguments are emotive and unexamined, the mildly logical has become strangely compelling.

It begins with the idea of autonomy. We cannot force others to live by our values. Every person must decide what makes life worth living. To insist otherwise is paternalism.

Then comes pragmatic compassion. People will use drugs whether we approve or not. People will find their lives unbearable, whether we acknowledge it or not. We can support them or moralize while they die.

There is also an emphasis on subjective experience. No one knows another’s pain. If someone says their suffering is intolerable, we are in no position to deny it, they say. If a user would rather face opioids than withdrawal and despair, are we entitled to interfere?

Finally, the comparison to medical ethics: we do not withhold insulin from diabetics who continue to eat poorly. We do not deny cancer treatment to smokers. Medicine responds to suffering, even when the patient has contributed to their condition. Harm reduction, they argue, simply applies that principle to addiction.

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These arguments produced tangible benefits, they argue. Needle exchanges reduced HIV transmission. Naloxone kits prevented deaths. Safe injection sites meant fewer people dying alone. MAiD brought relief to those in agony. These were not trivial outcomes. I am aware.

Yet when we look more closely, the very logic that underlies these policies also exposes their fatal limitations.

Addiction undermines choice. It hijacks the brain’s ability to reason, compare, and choose. A person deep in addiction is not selecting between alternatives like someone choosing coffee or tea. The structure of choice, the human will, itself is broken. The addiction decides before the person does. St Augustine knew this. Dostoyevsky knew it too.

And for the empirically minded, the research supports this. In British Columbia, where the “safe supply” model was pioneered, some addiction physicians now say the policy is failing. Worse, it may be creating new opioid dependencies in people who were not previously addicted. A study earlier this year found that opioid‑related hospitalizations increased by about 33 percent, compared with pre‑policy rates. With the later addition of a drug-possession decriminalization policy, hospitalizations rose even more (overall, a 58 percent increase compared to before SOS’s implementation). The study concluded that neither safer supply nor decriminalization was associated with a statistically significant reduction in overdose deaths. This is not freedom. It is a new form of bondage, meticulously paved by official compassion.

Despair disguises itself as autonomy, especially in a spiritually unmoored culture that no longer knows how to cope with suffering. A person requesting assisted death because of chronic, untreatable pain may appear lucid and composed, but lucidity is not the same as wisdom. One can reason clearly from false premises. If life is reduced to the absence of pain and the preservation of comfort, then the presence of suffering will seem like failure, and death will appear rational. But that is not a genuine choice because it is based on a misapprehension of what life is. All life entails pain. Some of it is redemptive. Some of it is endured. But it does not follow that the presence of suffering justifies the conclusion of life.

Someone turning to drugs because of homelessness, abandonment, or despair is often in an even deeper eclipse of the will. Here, there is not even the appearance of deliberation, only the reach for numbness in the absence of meaning. What looks like a decision is the residue of collapse. We are not witnessing two forms of autonomy, one clearer than the other. We are witnessing the breakdown of autonomy in various forms, and pretending that it is freedom.

Biological survival is not life. When we maintain someone in a state of near-constant unconsciousness, with no relationships, no capacity for flourishing, we are not preserving life. We are preserving a body. The person may already be gone. To define life as nothing more than breathing and performing bodily functions is to deny what makes us human. It reduces us to the level of non-human creatures, sentient, perhaps, but without reason, memory, moral reflection, or the possibility of transcendence. It tacitly advances the view that there is no essential difference between a person and a critter, so long as both breathe and respond to some stimuli.

Governments do these things to keep ballooning overdosing deaths down, preferring to maintain drugs users among the undead instead. That reminds me of how the Mexican government hardly moves a finger to find the disappeared, 100,000 strong of lately. For as long ss they’re disappeared, they choose not to count them as homicides, and they feel justified in ignoring the causes of all the killing around them.

Some choices are nefarious. Some choices deserve challenge. Not all autonomous acts are equal. The decision to continue living with pain, or to fight addiction, requires agency. The decision to surrender to despair may signal the absence of it. To say all choices are equal is to empty the word autonomy of meaning.

This reflects a dangerously thin view of the human person that permeates our present. What we now call “harm” is only death or physical pain. What we call good is whatever someone prefers. But people are more than collections of wants.

We should have learned this by now. In Alberta, safer supply prescribing was effectively banned in 2022. Officials cited diversion and lack of measurable improvement. We are forcing some people into treatment because we recognize the impairment of judgement in addiction.

In British Columbia, public drug use was quietly re-criminalized after communities rebelled. This was an admission of policy failure. “Keeping people safe is our highest priority,” Premier David Eby said. Yet safe supply remains. In 2023, the province recorded more than 2,500 overdose deaths. Paramedics continue to respond to thousands of overdose calls each month. This is not success. It is a managed collapse.

Meanwhile, Manitoba is preparing to open its own supervised drug-use site. Premier Wab Kinew said, “We have too many Manitobans dying from overdose… so this is one tool we can use.” That may be so. However, it is a tool that others are beginning to set aside. It is a largely discredited tool. Sadly, in the self-professed age of “Reconciliation” with Aboriginal Canadians, Aboricompassionadians are disproportionately affected by these discredited policies.

The Manitoba example illustrates the broader problem, despite damning evidence. Instead of asking what helps people live, we ask whether they gave consent. We do not ask whether they were capable of it. We ask whether they avoided death. We do not ask whether they found purpose.

We are not asking what might lead someone out of addiction. We are not asking what they need to flourish. We ask only what we can do to prevent them from dying in the short term. And when that becomes impossible, technocracy offers them death in a more organized form, cleanly approved by government. That’s compasson.

The deeper problem is not policy incoherence. It is the cultural despair that skates on the thin ice of meaninglessness. These policies make sense only in a culture that has already decided life is not worth too much. What matters is state endorsement and how it’s done .

It is more cost-effective to distribute naloxone than to construct long-term recovery homes. It is easier to train nurses to supervise injection than to provide months of residential treatment. It is far simpler to legalize euthanasia for the poor and the suffering than to work on solutions that lift them out of both. But is it right?

This is not compassion. It is surrender.

A humane policy would aim to restore agency, not validate its absence. It would seek out what helps people grow in wisdom and self-command, not what leaves them comfortably sedated. It would measure success not in lives prolonged into darker dependency but in persons recovered. In lives better lived.

This vision is harder. It costs time. It requires greater effort. It requires care and what some Christians call love of neighbour. It may require saying no when someone asks for help that could lead to ruin. But anything less is not mercy. It is a slow walk toward death while we leave the “system” to pretend there is no choice.

We did have a choice. We chose shallow comfort over deep obligation. We chose to manage symptoms rather than confront the deeper conditions of our age: loneliness, meaninglessness, despair. And now we live among the results: more, not fewer, people swaying in silence, already gone walking dead.

We might ask what we’ve forgotten about suffering, about responsibility, about what life is. Lives are at stake. True. But when our understanding of life is misdirected, so will be the policies the state gives us.

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