“…In 1994, the English author and activist John Elkington proposed the concept of triple bottom line (TBL), which integrates the considerations of the planet (environment) and the people (society) into the traditional bottom line of a firm (profit) (Elkington, , ; Elkington, Emerson, & Beloe, , p. 27). The term sustainability was first used in the 1970s by the Sierra Club, the oldest environmental organization in the USA, founded in the late 19th century (Chang, ). However, the TBL concept serves as a cornerstone framework of today's sustainability agenda.…”