When Googling phthalates (pronounced “thal-ates”), the first-page domain names include ourstolenfuture.org, thedailygreen.com, chemicalbodyburden.org and pollutioninpeople.org. Clearly environmentalists are concerned. But it’s called “environmental science” for a reason: empirical, data-driven studies are the foundation, and this plastic house appears slightly wobbly. Some of the health concerns attributed to phthalates are caused by high-level exposure and include...