Mysterious Fog in the US , Canada and UK: A dense, eerie fog with a "burning chemical-like smell" has spooked a good part of North America and parts of the United Kingdom and Canada. With social media amplifying all concerns, this phenomenon has sparked attention across all social media platforms. However, at the heart of this mysterious fog are a conjunction of natural events, social psychology, and environmental conditions that culminated in all the conspiracy theories and public health fears. Here's a closer look at the mysterious fog, its potential causes, and the societal response it has triggered.

Fog that Feeds Fear

The first reports of this "mysterious fog" came in from Florida where a resident said that they experienced respiratory symptoms, feverish warmth, and stomach cramps after contact with the fog. Similar stories started flooding social media, and within a day or two, a sinister force seemed to sweep across the United States, Canada, and parts of the UK. From Texas to Minnesota, people reported weird odors and health issues that they thought were linked to this bizarre atmospheric event.

Some witnesses were said to see "white particles" swirling through the air; theories ranged from a chemical attack or experimental weapon to drone-related chemical dispersals and references to historical military experiments, such as the infamous 1950s "Operation Sea-Spray."

Fuel to the fire were added when videos and posts, hundreds of thousands in number, began circulating on social media sites like TikTok and X (formerly Twitter) speculating on the origin of the fog. Hashtags like #ToxicFog went trending for days. Hysteria created a self-reinforcing loop in which every post spurred further scrutiny and fear.

Scientific Explanation of the Dense Mysterious Fog

1. What is Fog?

Fog is essentially a low-lying cloud formed when the air temperature cools to its dew point, causing water vapor to condense into tiny droplets or ice crystals. Several types of fog—advection fog, radiation fog, and valley fog—can form depending on conditions such as warm, moist air moving over cooler land or when temperatures plummet rapidly under clear skies.

2. Why the Chemical Smell?

Such chemical-like smell as reported during the occurrence of fog events is sometimes attributed to air pollution. It acts like a sponge, where it absorbs these pollutants, which include sulfur dioxide and nitrogen oxides, among others, that emit from industries. This mixture, therefore, leads to a stench that could be mistaken as unnatural or even toxic.

Also Read: Health Concerns Rise As US, Canada, and UK Come Under The Blanket Of Thick, Dense, Toxic Fog

3. What are the Health Concerns?

High moisture levels from fog can significantly exacerbate symptoms related to respiration, but especially in already predisposed asthmatics and allergy patients. The connection of these symptoms with actual fever, stomach cramps, and puffy eyes is too remote. Experts assume that the irritating effects of entrapped pollutants trapped in fog tend to affect more the eyes and throat rather than the rest of the body affected by some report.

Psychological Effects of Mass Panic Caused by Social Media

Social media amplified a natural weather event into a health epidemic. It made the personal experience of individuals become a cause for fear and speculation, a domino effect.

According to psychologists, this is a concept of selective perception, wherein once people's attention is drawn to environmental anomalies, they begin to notice them. This mirrors earlier panics, such as the Seattle windshield pitting panic of 1954. Then, atomic bomb testing caused fear in many and started to have people looking at their windshields for small marks that they had not seen before. Likewise, postings on the strangeness of the fog probably increased public awareness and suspicion, with people looking to attach unrelated symptoms to the phenomenon.

The fog hysteria shares a commonality with other instances of mass panic, such as the "drone sightings" of recent years or the Cold War-era fears of biological warfare.

Also Read: Mysterious Fog Is Making Americans Sick

These events underscore how fear can cloud judgment, especially when amplified by social media and sensationalist headlines. While historical cases, such as "Operation Sea-Spray," offer concrete evidence of the existence of unethical experiments, the jump from a natural weather condition to theories of chemical attacks exemplifies a more modern trend of connecting unrelated dots, all wonderfully seeded in distrust and anxiety.

Despite the swirling rumors, meteorologists and scientists are in agreement that the mysterious fog is not as alarming as it seems. It is well known that fog traps and amplifies pollutants, especially in urban and industrial regions. Moreover, winter months are the most conducive for fog formation, so its recent prevalence is unsurprising.

On the other hand, environmentalists advise that the fog should wake everyone up to increased levels of pollution. The reported odors and health irritations could be just symptoms of far deeper systemic issues like industrial emissions and lack of control over air quality.

The authorities must be transparent in their communication to combat misinformation and allay public fears. Governments and environmental agencies must provide timely updates on weather phenomena, air quality, and health risks. Initiatives like real-time pollutant tracking and public education campaigns can help demystify natural occurrences while addressing valid environmental concerns.

The mysterious Canada fog is a compelling case study in how environmental events intersect with psychology and societal dynamics. While rooted in natural phenomena, the fog became a vessel for collective fears, amplified by modern technology and historical anxieties.

In this information era where communication occurs at an almost lightning pace, the fog becomes a metaphor that reminds everyone about scientific literacy, environmental responsibility, and an effective balance when considering public concern. Whether perceived as a marvel of nature or as a tale that serves to teach, it left a very powerful mark in people's minds.

Triple-negative breast cancer is notorious as it can respond to chemotherapy initially, only for some cancer cells to adapt, survive and eventually become resistant to treatment. Researchers at the Medical University of South Carolina’s Hollings Cancer Center may have found a way to turn that against the tumour's nature.

In a new study published in Cell Reports Medicine, scientists used a two-step drug strategy that first weakened drug-resistant cancer cells and then blocked the backup system they turned to for survival.

Marking a breakthrough, the combination significantly slowed tumour growth in several models of triple-negative breast cancer, including the ones made from patients whose tumours had stopped responding to chemotherapy treatment.

An important thing to note is that this is still laboratory and preclinical research and not a treatment that is readily available to patients.

How Does The Two-Step Drug Strategy Work?

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First Step:

The researchers mainly focused on a protein called lysyl oxidase, or LOX. LOX has always been studied for its role outside cancer cells, where it can make it easier for cancer to spread by altering the tissue around the tumour.

But the research team found that LOX has another job inside triple-negative breast cancer cells. It helps them produce energy, maintain healthy mitochondria and cope with cellular stress. Blocking LOX therefore cancer cells from spreading.

Burge Ulukan, PhD, a postdoctoral fellow and co-first author of the study, “LOX helps cancer cells keep multiple survival systems running. When we blocked LOX, the cancer cells lost that advantage." He added, “When we inhibit it, we are inhibiting multiple arms. We're disrupting cells' energy production and making them much more vulnerable to treatment.”

But the researchers observed that the instead of simply dying, the cancer cells adapted again after LOX was blocked.

Second Step:

Also read:

The next step in the strategy is blocking the cancer's backup route. Once LOX was blocked, the cancer cells became increasingly dependent on another protein called DHODH, which gave the scientists with an even better second target.

They paired an experimental drug used to block LOX with leflunomide, an FDA-approved drug that blocks DHODH. Together, the drugs pushed the cancer cells towards ferroptosis, a form of cell death caused by damaging molecules building up inside the cell.

The combination significantly blocked tumour growth across several models and performed better than the LOX inhibitor combined with standard chemotherapy. The researchers reported no major weight loss or signs of kidney or liver toxicity in the models tested.

Ozgur Sahin, PhD, co-leader of the Hollings Cancer Biology and Immunology Research Program, described the strategy as, “It's a one-two-punch approach. First, we block LOX, which weakens the cancer cells. As they adapt and become dependent on a backup survival pathway, we deliver the second punch by blocking that pathway, too.”

Why Triple-Negative Breast Cancers Are Challenging To Treat?

Triple-negative breast cancer gets its name as its cells lack three common treatment targets: oestrogen receptors, progesterone receptors and HER2. This leaves doctors with fewer targeted treatment options than they have for some other breast cancers.

Chemotherapy remains an important treatment, but resistance can develop quickly. Sahin said, “Triple-negative breast cancer is one of the most aggressive, deadliest versions of breast cancer. Chemotherapy is really the mainstay, and interestingly, this subtype is sensitive to chemotherapy compared to others, but resistance develops quite quickly.”

Till now, the findings have been demonstrated in labs and preclinical models. The researchers are now developing a newer version of their drug to trap LOX to prepare for human testing.

India is moving closer to its goal of eliminating malaria by 2030. Between 2022 to 2025, 160 districts across the country reported zero indigenous malaria cases, according to the Union Health Ministry.

The country has also saw nearly 80% decline in malaria cases and deaths between 2015 and 2025. The number of districts with high malaria burden also went down from 155 to 33.

The latest figures were discussed at a review meeting chaired by Aradhana Patnaik, Additional Secretary and Mission Director, National Health Mission, with officials from the Ministry of Health and Family Welfare, National Centre for Vector Borne Diseases Control (NCVBDC), states and affected districts.

160 Districts Reported Zero Malaria Cases In Last 3 Years

160 districts reported zero indigenous malaria cases from 2022 to 2025. This is significant as it suggests that local transmission was successfully interrupted in these regions.

But zero reported cases does not mean the risk has vanished completely. Malaria can return when mosquitoes, infected people or favourable environmental conditions fuel transmission. To avoid this, health authorities are vigilantly continuing surveillance even in areas that have made substantial progress.

The government said the reduction in numbers reflects the positive impact of focused malaria control and elimination initiatives and strategies. According to PIB, It including surveillance, early diagnosis, treatment and control measures for vector-borne infections.

Also read: Malaria Alert in Germany: Frankfurt Airport Worker Dies After ‘Mosquito Arrives On Plane’; 5 Infected

Strategies Needed For Malaria Elimination

Patnaik stressed that India cannot rely on a one-size-fits-all approach as it moves towards elimination. He said, “Focused, area-specific strategies and strengthened surveillance are essential to accelerate India’s progress towards malaria elimination by 2030.”

The Health Ministry has identified 33 high-burden districts across nine states and Union Territories for particularly intensive action. These districts accounted for 64% of India's malaria cases and 54% of malaria deaths in 2025.

The states and UTs reviewed included Mizoram, Odisha, Tripura, Assam, Andhra Pradesh, Andaman and Nicobar Islands, Chhattisgarh, Jharkhand and Maharashtra.

Despite the overall decline, malaria deaths continue to occur, and authorities highlighted that delays in diagnosis and treatment are the primary driving factors.

The government has asked states to strengthen the “Test, Treat and Track” strategy, improve active surveillance and ensure that diagnostic tests and anti-malarial medicines remain available, particularly in remote areas.

Also read: World Mosquito Day: How Dengue Can Damage Your Kidneys

The Real Challenge For India

Malaria is transmitted through the bite of infected Anopheles mosquitoes. The parasite enters the bloodstream and can cause fever, chills, headache and body aches. In severe cases, it can affect the brain and other organs and become life-threatening.

The challenge for India now is not simply reducing cases, but preventing malaria from coming back in districts where transmission has become zero.

Patnaik stressed, “Health interventions alone cannot address several factors contributing to malaria transmission, including water-logging, source reduction and environmental management.”

The government has therefore called for greater coordination with rural and urban development departments, Panchayati Raj institutions and local communities to identify breeding sites and report suspected cases early.

Myocardial infarction (MI) is one of the most common cardiovascular disorders, with an estimated prevalence of 3.8% in individuals aged less than 60 years and 9.5% in those aged over 60 years. MI remains a leading cause of death and is a significant public health concern worldwide.

But a heart attack isn't one single disease with one single mechanism. Being able to classify the type of myocardial infarction quickly can improve diagnosis and treatment.

In view of this, four major cardiac societies—the European Society of Cardiology (ESC), the American College of Cardiology (ACC), the American Heart Association (AHA) and the World Heart Federation (WHF)—have jointly launched the Fifth Universal Definition of Myocardial Infarction.

The Fifth Universal Definition of Myocardial Infarction replaces numerical labels with three clinically meaningful categories.

The new approach aims to help healthcare professionals make more consistent diagnoses and enable patients to understand their condition better.

The new definition also aligns with the International Classification of Diseases (ICD) coding, which captures statistics on the extent, causes and consequences of different diseases.

“People may think of an MI as a heart attack caused by a blocked coronary artery but there are many different causes of MI,” explained ESC Chair, Professor Nicholas Mills from the University of Edinburgh, UK.

“The previous universal definition used a numerical system to categorize the different types of MI but this was not always easy to apply in clinical practice, leading to inconsistencies in diagnosis and treatment. The ESC, ACC, AHA and WHF have worked together to devise an updated and simplified classification system for MI, which aims to address these limitations.”

What Does the Fifth UDMI Mean?

The Fifth Universal Definition of Myocardial Infarction updates the classification to better reflect underlying pathophysiology, align with the clinical evaluation of patients, and incorporate objective diagnostic criteria.

Notably, it could facilitate wider study of less common mechanisms of primary MI, such as spontaneous coronary artery dissection (SCAD), a condition occurring predominantly in women that is currently underdiagnosed.

What Are the 3 New Heart Attack Categories?

The new system considers the underlying cause of MI and aligns the diagnosis with established approaches to clinical evaluation. It recognises that MI occurs in three clinical settings: primary MI, secondary MI and procedure-related MI.

In this updated approach to MI classification, all MIs fit into one of these three clinical categories, and the new document outlines the diagnostic tests and investigations required for each.

1. Primary MI

Primary MI arises spontaneously due to an acute problem in a coronary artery. It is most commonly caused by a rupture of an atherosclerotic plaque, but there are other causes, such as a tear in the coronary wall (spontaneous coronary artery dissection [SCAD]), spasm or a clot.

2. Secondary MI

Secondary MI arises from an imbalance in oxygen supply and demand in the heart caused by another condition, such as very high or very low blood pressure or a very fast heartbeat.

3. Procedure-Related MI

The third setting—procedure-related MI—is one that occurs within 30 days of a cardiac procedure, such as coronary stenting, or a heart operation, such as coronary artery bypass surgery.

“Clinicians often do not use the previous numerical terminology—e.g. type 2 or type 4c—in patient discussions as it is rather complex. With the new approach, we can now talk with patients about the cause of their MI so that they can understand their condition and recognize why the next steps, such as further tests and treatments, are needed,” said ACC/AHA Chair, Professor Kristin Newby from Duke University Medical Center, Durham, US.