Air Quality

Celebrity Profiles

Clean-air performance claims can vary widely, making it difficult to compare models. Standardized air purifier testing exists to remove marketing ambiguity and give you repeatab...

climate-and-environment

The atmosphere shields life on Earth, but human activities are altering its composition in ways that affect health, climate, and ecosystems. Protecting it means reducing greenho...

science-environment

A ring of smoke in the sky is usually a visible plume from a fire, industrial activity, or volcanic process that has been shaped by winds into a circular or arc-like pattern. Th...

Status Updates

Conditions in Paradise, California today affect residents, visitors, and returnees in real time and vary by neighborhood, elevation, and proximity to burn scars. This status cla...

air-cleaners-purifiers

When people ask about the best air purifier brand, they are usually trying to solve a specific indoor air problem, such as allergies, asthma, odors, or wildfire smoke. The best...

indoor-air-quality

If you are shopping for better indoor air, a device that cleans and adds moisture is often high on the list. A combined air purifier and humidifier can simplify your setup, but...

city-planning

A toxic city is commonly understood as an urban environment where pollution, degraded infrastructure, unsafe housing, and social stressors consistently harm residents’ physica...