Thirty years after its enactment, California’s Safe Drinking Water and Toxic Enforcement Act of 1986 (commonly referred to as “Proposition 65”) remains an undiminished irritant to businesses who sell products that are used in California. Proposition 65 is a so-called right-to-know statute that requires everyone in the chain of commerce to ensure that California consumers receive “clear and reasonable” warnings prior to being exposed to a growing list of chemicals—now numbering more than 800.

New publication Why Masonry? Flyer from WHYMASONRY.ORG

A 3D printed brick has been created that can provide natural and efficient air conditioning. Though this brick was created by Virginia San Fratello and Ronald Rael in 2015, it’s based on technology from 2500 B.C.E.