Chlorine in tap water saves lives by killing pathogens. The byproducts it leaves behind are a different question. Here's what the evidence says — and what to do.
Atrazine in tap water peaks 3-7× the EPA limit during runoff season — and the limit is an annual average. Here's what the evidence says.
VOCs in home air run 2-5x higher than outdoor air, and 1,000x higher during paint stripping. Where they come from, what the evidence says, and what to do.
DMDM hydantoin is a cosmetic preservative that slowly releases formaldehyde inside the bottle. Here's what it is, where it lives, and which regulators have moved.
Chemical combination effects: the gap regulatory testing misses. Eight weak chemicals, each below its no-effect dose, still combine into a substantial response.
Why 'safe dose' chemicals aren't always safe: the regulatory dose-response model uses three data points to draw a curve hormones don't follow.
Non-stick cookware is a PTFE coating over aluminium. Intact + low-medium heat = mostly inert. Scratched + empty + preheated = a different conversation.
Stay current
New research, when we find it.
One email when we find something worth reading. No schedule, no filler.
Every product page shows you exactly what's in it.
Full material breakdowns. What we left out, and why.
Browse products