… about how entrepreneurs turn a concept into a successful reality. Circularity Clean Energy Corporate Sustainability Environmental Innovation Sustainable Finance and ESG Thriving Food … finalists: Catala - Producing one barrel of oil pollutes an average of five barrels of water. Offshore discharge of this toxic “produced water” is strictly regulated; however, … a for-profit start-up. (Please note though, that it is not required for the venture to be incorporated before competing for Yale Prizes) What stage should my idea be? Your idea can be …