Sulfur dioxide (SO₂) is a major air pollutant generated primarily from the combustion of fossil fuels and certain industrial processes. Exposure is linked to respiratory irritation, asthma exacerbation, and cardiovascular effects, while also contributing to acid rain, which damages ecosystems, infrastructure, and agriculture. Although emissions have declined in many regions due to regulations, SO₂ remains…

Fine particulate matter (PM2.5) is one of the most harmful air pollutants, linked to respiratory illness, cardiovascular disease, and premature mortality. Arising from vehicle emissions, industrial processes, biomass burning, and natural events such as wildfires, PM2.5 penetrates deep into the lungs and bloodstream, posing serious risks even at low concentrations. Managing PM2.5 is particularly challenging…

Cannabis regulation has rapidly evolved in recent years, shifting from prohibition toward medical and recreational legalization in many jurisdictions. While legalization brings opportunities for economic growth and social justice reforms, it also raises significant public health and safety questions. Concerns include impaired driving, adolescent use, product contamination, and the long-term health effects of high-potency formulations.…

The protection of native species is central to biodiversity, ecosystem resilience, and cultural heritage. Native plants, animals, and microorganisms provide critical ecosystem services such as pollination, water purification, and soil stability. Yet these species face mounting risks from habitat loss, climate change, pollution, and invasive species. The decline or disappearance of native species not only…

Elevating devices — including elevators, escalators, and lifts — are integral to modern urban infrastructure, providing mobility, accessibility, and safety in buildings and public spaces. Yet failures in design, installation, or maintenance can result in accidents with serious consequences, ranging from injuries to fatalities. Public confidence in these systems depends on effective regulation, oversight, and…

Titanium is valued for its strength, light weight, and corrosion resistance, making it indispensable in aerospace, medical devices, construction, and consumer goods. While titanium itself is generally considered safe, its extraction, processing, and use in certain forms raise potential health and environmental risks. Occupational exposures to titanium dusts and nanoparticles, as well as environmental impacts…

Contamination of water sources — whether from industrial discharges, agricultural runoff, mining, or natural events — poses significant risks to human health, ecosystems, and economic activity. Pollutants such as heavy metals, pathogens, nitrates, pesticides, and emerging contaminants like PFAS can persist in water systems, creating both acute and chronic health threats. Incidents of contamination often…

Legal metrology — the regulation of measurement in trade, safety, and compliance — underpins trust in markets and everyday transactions. From weighing goods in grocery stores to calibrating medical devices, fuel pumps, and utility meters, accurate measurement ensures fairness, safety, and accountability. Failures in measurement systems can erode consumer confidence, distort markets, and introduce risks…

Mitigating flood risk goes beyond response and recovery — it involves proactive strategies to reduce the likelihood and severity of impacts before disasters occur. Measures range from physical infrastructure, such as levees, dams, and green stormwater systems, to policy interventions including zoning, building codes, and managed retreat. Climate adaptation and resilience planning now make flood…

Country foods — the traditional foods harvested, hunted, or fished by Indigenous and rural communities — are central to cultural identity, nutrition, and food security. They provide essential nutrients, support community resilience, and reinforce connections to land and heritage. However, these foods can also present risks due to environmental contamination, overharvesting pressures, or changing ecosystems…