Catarina Barreiro is the founder of Projeto Do Zero, a communication project of sustainability in digital channels (social networks, website and podcast) and physical events, such as the Cidade Do Zero event, which joint more than 20,000 people in the 2023 edition. She is co-founder of Zeroo Smart Packaging Solutions, a startup that reuses smart packaging for food consumption and Norm, a national underwear brand for menstruation, which aims to offer more sustainable alternative to the disposable options available in the market.