Opinion
Losing Oxygen
The ability of expressing our fundamental right to breathe clean air is over. The Global Commons of air is rapidly being impacted, in addition to an increase in the concentration of Carbon Dioxide and a decrease in Oxygen concentration. The concentration of toxic gasses and airborne particulate matter in the atmosphere is increasing. While a global compact on the quality of air as a fundamental right, is urgent consideration of its impact on health must also become a matter of concern. he most essential thing for our existence is the ability to breathe. The air that we take for granted is like an invisible river of gasses considered a part of the ‘Global Commons’ or those resources that extend beyond political boundaries. The Commons of air is composed of a mix of gasses, the dominant being Nitrogen at about 78%, followed by Oxygen at 21%. Carbon Dioxide that is contributing to climate change accounts for only 0.04% and demonstrates how small changes in the concentration of gasses in the atmosphere can bring about massive changes to those that live in it.
The Oxygen component of the air we breathe was made by those earliest plants, the Bryophytes, which colonized land from 470 Ma onwards. This land colonization increased atmospheric oxygen to present levels by 400 Ma. The fire-mediated feedbacks that followed have stabilised high oxygen levels ever since, shaping subsequent evolution of life. Oxygen is the most crucial element on earth for the aerobic organisms that depend on it to release energy from carbon-based macromolecules. The current stocks have been maintained over millions of years by plants, terrestrial and oceanic. To sustain a gaseous concentration at around 21% of the air we breathe. This level is required to maintain a healthy body and mind. A lowering of this concentration has consequences. At 19% physiologically adverse effects begin. Impaired thinking and attention, reduced coordination, decreased ability for strenuous work is experienced, at 15% Poor judgment, faulty coordination, abnormal fatigue upon exertion, emotional upset Levels below this lead not only to very poor judgement and coordination but also impaired respiration, lung and heart damage. The question often arises: ‘If the atmospheric Oxygen concentration is 21% how can it vary so widely in different areas ? The answer is that ‘when you add other gasses, smoke and aerosols into the atmosphere, the concentration of atmospheric gasses will decrease in concentration. In some cities like New Delhi or Mexico have Oxygen concentrations measured at about 18% or lower.
There has been a clear decline in the volume of oxygen in Earth’s atmosphere over the past 20 years. Although the magnitude of this decrease appears small compared to the amount of oxygen in the atmosphere, it is difficult to predict how this process may evolve, due to the brevity of the collected records. A recently proposed model predicts a non-linear decay, which would result in an increasingly rapid fall-off in atmospheric oxygen concentration, with potentially devastating consequences for human health.
The free Oxygen in the atmosphere is 1.2×1015 tonnes (12,000,000,000,000,000 t), but it is unstable in our planet’s atmosphere and must be constantly replenished by photosynthesis in green plants. Without plants, our atmosphere would contain almost no O2. An important thing that needs international address is the fact that the system that replenishes the Oxygen of our atmosphere is under threat. We remove the vegetation that produces the Oxygen at a prodigious rate. According to Global Forest Watch we fell about 15 billion trees each year. With one tree one tree producing about 120Kg of Oxygen per year, the loss of Oxygen production through deforestation is massive. The impact on the oceans is becoming just as serious.
As human activities have caused irreversible decline of atmospheric O2 and there is no sign of abatement, It is time to take actions to promote O2 production and pay for industrial use and consumption of O2. Vehicular traffic in cities with poor air flow design transforms molecular oxygen O2 into Ozone O3. Ozone is good when it is high up in our atmosphere. It protects us from sunburn. Ozone is bad when it is near the ground where we can breathe it in. You can’t see ozone in the air but bad ozone levels is sometimes called smog. It is formed when chemicals coming out of cars and factories are cooked by the hot sun. Breathing in ground-level ozone can make you cough. It can also make it harder for you to breathe. Ozone might even make it hurt to take a breath of air. When you breathe in ozone, it makes the lining of your airways red and swollen, like your skin would get with a sunburn.
All this becomes even more pressing with the discovery of the “human oxidation field” a beneficial chemical microenvironment formed around the body’s surface that helps protect it from volatile organic compounds (VOCs). This field is generated by the reaction of ozone with oils and fats on our skin, especially the unsaturated triterpene squalene, which constitutes about 10 percent of the skin lipids that protect our skin and keep it supple. The reaction releases a host of gas phase chemicals containing double bonds that react further in the air with ozone to generate substantial levels of OH radicals. As the Ozone levels as in cities rise, the individual ‘human oxidation field’ looses its ability to maintain skin health.
In looking at the question of why there was such a rapid loss in the quality of air, the first study to systematically analyse the global O2 budget and its changes over the past 100 years, found that anthropogenic fossil fuel combustion is the largest contributor to the current O2 deficit, which consumed 2.0 Gt/a in 1900 and has increased to 38.2 Gt/a by 2015.
The inability to defend our fundamental right to breath seems to stem from the ability of any industry to discount the consequences of burning fossil fuels as a ‘negative externality’. Climate Change is one consequence, but the impact that lowered Oxygen concentrations will have on emerging urban populations seem disturbing. There is only one way to arrest the fall in atmospheric Oxygen, increase the rate of photosynthesis. There must be a protection of the existing stocks of photosynthetic biomass and programs that encourage increasing the standing stock of Oxygen to be able to sustain our fundamental right to breathe clean air.
by Dr. Ranil Senanayake
Opinion
Jeffrey: Cartoonist par excellence
If there exists a print media personality who does not receive the due recognition and appreciation he rightfully deserves, it undoubtedly is ‘Jeffrey’ of The Island newspaper. The works of many a journalist have been frequently highlighted and appreciated but the capabilities and efficiency of personnel of the calibre of ‘Jeffrey ‘ are, more or less, taken for granted.
In every sphere of life, professional or occupational, there are people who function, not necessarily from behind the scenes, but nevertheless perform an equally efficient service, which in all probability goes unnoticed.
To be frank, even before reading the headlines of the Newspaper, as is customary now, my eyes seek for the Cartoon of the day. Indeed, a sight for sore eyes each morning, the lovable ‘Jeffrey’ makes my day.
Suffice to say that a ‘Good Job done man’ type of occasional pat on the back, to a person who puts his very soul into his work, would touch the only place where it matters the most – his heart. If a smile could work wonders, then how much further would a word of appreciation go.
‘Jeffrey ‘ has, time and again through his cartoons, aptly proven his innovative and creative skills to present factual depiction of current affairs, both local and global. His drawing pen effortlessly covers all boundaries, irrespective of whatever nature. On a previous occasion, too, I have openly commended his abilities, finding it difficult to fathom how he could convey pertinent incidents, normally requiring hundreds of words to express, with a single drawing.
To all intents and purposes, ‘Jeffrey ‘ ranks much higher and could be considered as a rare find when compared with the numerous others actively engaged in this particular field of professionalism.
In ‘Jeffrey ‘, The Island newspaper indeed has a Cartoonist par excellence!
Jeffrey, more power to your elbow!
WILLIAM PHILLIPSZ
Opinion
Anti-aging injection shows promise in re-growing knee cartilage
Scientists at Stanford Medicine have reported a discovery that could change how arthritis and joint damage are treated. In experiments on animals and human tissue, researchers found that blocking a protein linked to aging can restore worn cartilage in the knee and prevent arthritis after injury. The treatment works not by adding stem cells, but by reprogramming existing cartilage cells to behave in a more youthful way.
In aging mice, an injectable drug rebuilt knee cartilage that normally thins with age. In mice with knee injuries similar to anterior cruciate ligament tears, the same treatment prevented the onset of arthritis, a condition that often follows such injuries in humans. A pill form of the drug is already being tested in early clinical trials for age-related muscle weakness, raising hopes that a similar approach could one day be used for joints.
Human knee cartilage removed during joint replacement surgery also responded to the treatment. When exposed to the drug in the laboratory, the tissue began forming new cartilage that resembled healthy, functional joint cartilage. These findings suggest that cartilage lost to aging or arthritis might eventually be restored through injections into the joint or even oral medication, potentially reducing the need for knee and hip replacements.
Osteoarthritis affects about one in five adults in the United States and costs tens of billions of dollars annually in direct health care spending. Despite its prevalence, there is no drug that can stop or reverse the disease. Current treatment focuses on pain relief, physical therapy and, in advanced cases, joint replacement surgery.
The new therapy targets a protein known as 15-PGDH, which increases in the body with age. The research team classifies it as a gerozyme, a type of enzyme that contributes to the gradual decline of tissue function over time. Previous work from the same group showed that rising levels of 15-PGDH weaken muscles with age. Blocking the protein restored muscle strength and endurance in older mice, while forcing young mice to produce it caused muscle loss.
Unlike muscle, bone or blood, cartilage does not rely on stem cells to repair itself. Instead, cartilage cells called chondrocytes can change their gene activity. By inhibiting 15-PGDH, researchers found that these cells reverted to a more youthful state and began producing healthy cartilage again.
“This is a new way of regenerating adult tissue, and it has significant clinical promise for treating arthritis due to aging or injury,” said Helen Blau, professor of microbiology and immunology at Stanford and a senior author of the study.
There are three main types of cartilage in the body. Elastic cartilage forms flexible structures like the outer ear. Fibrocartilage is tough and shock absorbing, found between spinal vertebrae. Hyaline cartilage, also called articular cartilage, is smooth and glossy and allows joints such as the knees, hips and shoulders to move with minimal friction. Osteoarthritis mainly affects this last type.
The disease develops when joints are stressed by aging, injury or excess weight. Chondrocytes begin releasing inflammatory molecules and breaking down collagen, the main structural protein of cartilage. As collagen is lost, cartilage thins and softens, leading to pain, swelling and stiffness. Articular cartilage rarely regenerates on its own, and attempts to find stem cells capable of rebuilding it have largely failed.
In the new study, researchers compared knee cartilage from young and old mice and found that levels of 15-PGDH roughly doubled with age. When older mice were treated with a drug that blocks the protein, either throughout the body or directly in the joint, their knee cartilage thickened and regained function. Importantly, the new tissue was true hyaline cartilage rather than weaker fibrocartilage.
The results were equally striking in injured joints. In mice with ligament injuries, repeated injections over four weeks sharply reduced the likelihood of developing arthritis. Untreated animals showed high levels of 15-PGDH and developed arthritis within weeks. Treated animals moved more normally and placed more weight on the injured limb.
Detailed analysis showed that the treatment shifted the balance of cartilage cells. Cells associated with inflammation and cartilage breakdown became less common, while cells responsible for producing healthy joint cartilage increased markedly. This change occurred without the involvement of stem cells.
When human osteoarthritic cartilage was treated in the laboratory for one week, similar changes were observed. Levels of harmful gene activity fell, and signs of cartilage regeneration appeared.
The findings are encouraging but still early. While safety trials of a 15-PGDH inhibitor for muscle weakness have shown promising results, clinical trials focused on cartilage regeneration have yet to begin. Even so, researchers are optimistic.
“Imagine regrowing existing cartilage and avoiding joint replacement,” Blau said. For millions living with joint pain and stiffness, that possibility now seems closer than ever.
Opinion
Why is transparency underfunded?
The RTI Commission has now confirmed what many suspected — although the RTI Act grants it independence to recruit staff, this authority is rendered toothless because the Treasury controls the purse strings. The Commission is left operating with inadequate manpower, limiting its institutional growth even as it struggles to meet rising public demand for information.
This raises an uncomfortable question: if the Treasury can repeatedly allocate billions to loss-making State-Owned Enterprises — some of which continue to hemorrhage public funds without reform — why is adequate funding for the RTI Commission treated as optional?
Strengthening transparency is not a luxury. It is the foundation of good governance. Every rupee spent on effective oversight helps prevent many more rupees being wasted through inefficiency, misuse, or opaque decision-making.
In such a context, can one really fault those who argue that restricting the Commission’s resources conveniently limits disclosures that may prove politically inconvenient? Whether deliberate or not, the outcome is the same: weaker accountability, reduced public scrutiny, and a system where opacity is easier than openness.
If the government is serious about reform, it must start by funding the institutions that keep it honest. Investing in RTI is not an expense — it is a safeguard for the public purse and the public trust.
A Concerned Citizen – Moratuwa
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