Got old paint cans sitting in the basement or garage? Don’t just toss them in the trash. This guide breaks down the difference between latex and oil-based paint, shows you simple ways to dry out latex paint so it can go in the regular trash, and explains why oil-based paint must go to household hazardous waste. Proper disposal protects your local water, soil, and community.

Ground-level ozone forms when traffic and industrial emissions react in sunlight. It’s the main component of summertime smog and can irritate lungs and trigger asthma. Here’s how it forms, when it’s worst, and what you can do.

Nitrogen dioxide is a combustion gas from vehicles, gas stoves, and power plants that can irritate the lungs and worsen asthma. Here’s where it comes from, why indoor sources matter, and simple ways to reduce exposure.

Chemicals in food packaging can migrate into food — especially when the food is hot, fatty, or stored a long time. Here’s what the main ones are, how transfer happens, and simple ways to reduce contact.