A new commentary article in Nature Climate Change by CSSN Executive Director J. Timmons Roberts and CSSN Scholar Stacy-ann Robinson et al. argues that the 2009 pledge to mobilize US$100 billion a year by 2020 in climate finance to developing nations was not specific on what types of funding could count. Indeterminacy and questionable claims make it impossible to know if developed nations have delivered; as 2020 passes, opportunity exists to address these failures in a new pledge.

Authored by CSSN Executive Director J. Timmons Roberts and CSSN Scholar Stacy-ann Robinson, along with Romain Weikmans, David Ciplet, Mizan Khan & Danielle Falzon.