HeinzWittenbrink 22 Dec 2023 in Public https://www.theguardian.com/environment/2023/dec/14/failure-cop28-fossil-fuel-phase-out-devastating-say-scientists 2023-12-14 COP28 Michael Mann Magdalena Skipper Climate Crisis Advisory Group David King Friederike Otto Martin Siegert Mike Berners-Lee Elena Cantarello James Dyke Anne Rasmussen Lisa Schipper