As political and business leaders gather for the World Economic Forum in Davos, Switzerland, this week, a roster of the most sustainable companies is also enjoying a moment in the spotlight. The list, the Global 100, ranks large corporations across the globe on their performance reducing carbon and waste, their gender diversity among leadership, revenues derived from clean products, and overall sustainability. In its 15th year, the ranking is compiled by a Canada-based sustainability-focused financial information company and magazine, Corporate Knights, beginning with a list of about 7,500 companies, all of which generate more than $1 billion in annual revenue.