Air and Indoor Quality
The Topics (5)
Mold Mycotoxins
Indoor molds in water-damaged buildings and the mycotoxins they produce, with the page's account of chronic inflammatory illness, testing and remediation.
Read the deep dive →Carbon Monoxide
An odorless gas from incomplete fuel burning that blocks oxygen delivery, causing hundreds of preventable US deaths each year and delayed nerve damage.
Read the deep dive →Air Pollution PM25
Fine particles from traffic, fires and indoor burning that reach deep into the lungs and bloodstream, linked to heart, lung and brain disease.
Read the deep dive →Secondhand Smoke
Exhaled and side-stream tobacco smoke breathed by non-smokers, a known human carcinogen harming adults and children, with lingering thirdhand residue.
Read the deep dive →Radon
A natural radioactive gas seeping from soil into homes, the leading cause of lung cancer among people who have never smoked.
Read the deep dive →What is breathed, indoors and out. Two of these — carbon monoxide and radon — are among the few entries on this site with an unambiguous, measurable and preventable death toll, which is worth saying plainly in a section where much else is contested.