By INDEX Editorial Team | Based on peer-reviewed research - When a surface looks clean, is it actually clean enough to reduce hygiene risk? That question matters in homes, schools, healthcare facilities, offices, and commercial facilities. It also matters for…
By INDEX Editorial Team | Based on peer-reviewed research - If you have ever opened a bedroom door in the morning and felt the air seemed stale, or noticed a conference room gets stuffy long before a meeting ends, a…
By INDEX Editorial Team | Based on peer-reviewed research - A practical, science-first framework for travelers, facility teams, and health-conscious professionals who want better information—not guesswork—about hotel room air. When people talk about a “clean” hotel room, they usually mean…
By INDEX Editorial Team | Based on peer-reviewed research - If someone in your home, workplace, or building vapes indoors, a reasonable question follows: does it affect indoor air quality in a meaningful way? The short answer is yes. The…
By INDEX Editorial Team | Based on peer-reviewed research - Some air-cleaning devices may reduce certain pollutants while creating others. Here’s how to evaluate the tradeoffs using a science-first, criteria-based approach. If you are shopping for an air purifier because…
Seisu-dō - The Choreography of Hand Hygiene
This video details a scientific study comparing cleaning techniques to determine how systematic cloth folding impacts sanitary results. By measuring organic residue with ATP meters, researchers discovered that traditional "wadding" or bunching a towel causes it to rapidly lose effectiveness,…
By INDEX Editorial Team | Based on peer-reviewed research ─ If your home or building is newer, recently weatherized, or noticeably better sealed than older structures, you may have heard two competing messages: “A tight building is more efficient and…
Equivalent Melanopic Lux (EML) is a metric used in lighting design to measure how much a light source stimulates the human biological clock, rather than just how bright it looks to the human eye. While traditional "lux" measures the light…