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Joint design of emission tax and trading systems / Bernard Caillaud and Gabrielle Demange, Vox EU, 6/10/2015The standard economic argument in favour of a uniform carbon price is efficiency – all agents face the same marginal cost of pollution. Such a price can be achieved either by an emissions trading (cap-and-trade) system or by imposing a tax. This column argues that whether a uniform policy or a mixture of both is optimal depends on a few factors, and most importantly on the nature of stochastic shocks affecting the economy... lire la suiteOsons ! Désobéissons ! Sortons de l'âge des énergies fossiles ! En dix étapes ! / Maxime Combes, blog Mediapart, 7/10/2015Face à l'urgence climatique et sociale, les chefs d'Etat et de gouvernement osent ne rien entreprendre de déterminant. Nous avons le droit de nous défendre. Le droit de désobéir. Osons donc l'impossible pour « déverrouiller, déminer et déclencher » la transition !... lire la suiteThe Clean-Energy Moonshot / Jeffrey D. Sachs, Project Syndicate, 6/10/2015In May 1961, President John F. Kennedy stirred America and the world with these words: “I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the Earth.” Just eight years later, NASA did just that – with astounding benefits for science, technology, and the world economy. Now, a group of leading scientists, innovators, and economists has identified our era’s moonshot: to replace fossil fuels with clean-energy technologies within this generation... lire la suiteFactcheck: How much energy does the world get from renewables?, the Carbon brief blog, 6/10/2015The world cannot avoid dangerous climate change without moving to "near zero emissions" before the end of the century, according to the Intergovernmental Panel on Climate Change. Zero-carbon sources of energy will be key to this transition and in the power sector they are already being added more quickly than fossil fuels... lire la suite