Matter: Chlorine, Swimming Pool Helper, Has a Checkered Past
In weapons and cancer-causing dioxins, chlorine can be a killer. But its threats today are nothing compared with its menace on the early Earth. [Source]
Publication Date:Origin: nytimes.com
Category: Chemicals
Topics: , Earth, early, menace, compared, nothing, today, threats, killer, chlorine, dioxins, cancer-causing, weapons, Checkered, Helper, Swimming, Chlorine, Matter