Climate & Health

The World Health Organization (WHO) is the United Nations’ specialized agency for health, coordinating global action on outbreaks, setting health standards, and supporting countries to strengthen health systems. This guide explains how WHO works in practice, what it does well, where its limits are, and how individuals, clinicians, and organizations can use WHO guidance responsibly.

The U.S. Food and Drug Administration (FDA) is a central public health agency that oversees the safety and effectiveness of many products people use every day, from prescription drugs and vaccines to food labeling and medical devices. This guide explains what the FDA does, how its decisions are made, what the system gets right, where it can fail, and how to use FDA tools to make safer, smarter choices.

Microplastics are tiny plastic particles that are now found in air, water, food, and household dust, making exposure difficult to avoid. This guide explains what microplastics are, how they enter and move through the body, what the best current research suggests about health risks, and practical steps that can meaningfully reduce exposure without obsessing over perfection.

Exposure means contact with substances that can affect health, from air pollutants and chemicals to allergens, noise, and radiation. This guide explains how exposure happens, why dose and timing matter, what benefits exist in controlled settings, and how to reduce harmful exposures at home, work, and outdoors.

A trend is the direction your health is moving over time, not a single number on a single day. Learning to track and interpret trends helps you make better decisions, avoid overreacting to noise, and choose interventions that actually move your health in the right direction.

Misinformation in health is not just “wrong facts.” It is a predictable pattern of misleading claims that can change decisions, reduce trust, and increase avoidable harm. This guide explains how misinformation works, why it spreads so well, when it can have short-term “benefits,” and how to respond with practical, evidence-based steps.

Public health is the science and practice of protecting and improving the health of populations through prevention, education, and systems that make healthy choices easier. This guide explains how public health works, what it measurably improves, where it can go wrong, and how to apply evidence-based strategies in communities, workplaces, schools, and healthcare.

Filtration is one of the most practical ways to improve air and water quality by removing particles, microbes, and some chemicals. But not all filters remove the same things, and the wrong setup or poor maintenance can create new problems. This guide explains how filtration works, what it can and cannot do, and how to choose and use it safely.

Access is the ability of patients to obtain necessary medical care and supplies, when and where they need them, at a cost they can manage. It is shaped by availability, affordability, acceptability, and the real-world friction of navigating systems. This guide explains how access works, why it matters, common barriers, and practical ways patients and organizations can improve it.

The National Institutes of Health (NIH) is the U.S. government’s primary agency for biomedical and public health research. It funds and conducts research that shapes modern medicine, from basic biology to clinical trials and public health guidance. This guide explains how NIH works, what it does (and does not) do, how to use NIH resources, and how to interpret NIH-funded evidence in real-world health decisions.