As Earth Day approaches on April 22, KWHS calls on guest writer Rebecca Unger, a high school senior from Massachusetts, to explore the environmental justice movement. Says Unger: “Environmental justice is significant for adolescents, educators and aspiring businesspeople alike. A good entrepreneur needs to consider the practical implications of how systemized inequality affects the market; a good citizen needs to consider the moral implications of failing to challenge that inequality.”

The business of sustainability – meeting the needs of the present without compromising resources for future generations — is growing among companies with a social conscience. Guayakí, which makes and sells Yerba Mate beverages, is an example of a company that has built its entire business model on practices that drive environmental and social change. Its main goal: to get you, as the consumer, to support sustainability with your dollars.

Young entrepreneurs are providing innovative products and services around the world. In this, the first of a series of articles on global entrepreneurship that will run periodically, Knowledge@Wharton High school profiles 19-year-old Matías Doublier, co-founder of ElectryAlg, which is creating electrical energy through algae for areas of rural Argentina.