More than 40 leading firms across the building industry have endorsed the draft Health Product Declaration (HPD) Open Standard, a format for reporting product content and associated health information of building products. The HPD Open Standard was initially endorsed by 24 organizations and now has 45 endorsers total, including architecture, design, building owners, developers, construction firms, and nonprofit organizations. The additional endorsers announced will help sustainability leaders make more informed decisions about product impacts on human health. The HPD Open Standard Working Group will develop a pilot program to test the format before its full release in mid-2012.