Certainly those at HEC Paris feel strongly about ESG. When a manifesto was started 18 months ago, about 400 out of the school’s 1,000 grande école graduates signed it to declare that they would not work for a company that wasn’t engaged in reducing its ecological footprint. The number of signatories has since grown to more than 35,000 to include those outside HEC, which includes a sustainability and disruptive innovation track on its MBA, as well as a number of electives, writes Bloomberg Businessweek.