https://knowledge.wharton.upenn.edu/article/the-missing-link-between-esg-and-corporate-innovation/
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20001en.pdf
http://www.ftseglobalmarkets.com/news/uk-pension-deficits-rise-to-£145bn-liabilities-at-record-high.html