Change Agent GoodGuide and others use technology to help turn consumers green

A host of companies and nonprofits are using technology – from smartphones to social networking – to make it easier for consumers to choose environmentally friendly products.

Romeo Ranoco/Reuters/File

The way Dara O’Rourke tells the story, the idea for GoodGuide came to him when he was slathering some suntan lotion onto his three-year-old daughter’s face.