Sustainability has rapidly become an indispensable part of corporate governance. But as companies commit to green practices, a worrying trend is also surfacing: Some corporations are painting themselves as green while failing to back their claims with concrete actions. Numerous examples abound: The UK Advertising Standards Authority (ASA) has recently banned a number of ads from prominent companies, including HSBC for being “misleading” about efforts to tackle climate change. The ASA also banned the ads of Ryanair for the company’s unsubstantiated claim of being Europe’s lowest emissions airline.