Scott Barrett , Carlo Carraro, Jaime de Melo, 10 November 2015

This year, for the first time ever, nearly all of the world’s countries are making pledges to help limit future climate change. As of 1 October, 147 countries (representing about 85% of global emissions) have submitted their Intended Nationally Determined Contributions. These pledges, if carried out in full, are expected to lower emissions relative to the ‘business as usual’ forecast. However, they are not expected to prevent emissions from increasing above today’s level through 2030. To meet the global goal of limiting mean global temperature change to 2°C relative to the pre-industrial level, much more will need to be done after 2030. Eventually, emissions will have to fall to zero worldwide – either that, or countries will need to remove carbon dioxide directly from the atmosphere. This column introduces a new Vox eBook that looks into what needs to be done to build a climate regime that is both workable and effective.

Brian Flannery, Jaime de Melo, 28 September 2015

Climate monitoring organisations report that 2015 is set to break global temperature records. Meanwhile, this December ministers will convene at the UN meeting in Paris and the WTO meeting in Nairobi to continue climate negotiations. This column reports on progress to date, arguing that small steps forward are being taken, but they are not sufficient.

John Hassler, 11 March 2012

The concern over the negative consequences of global warming has led to a vast array of policy measures aimed at reducing the use of fossil fuels. Yet a comprehensive plan for a shift towards more climate-friendly energy is still lacking. This column argues that a major reason for this is that macroeconomists have not been sufficiently active in the policy discussion. It then lays out four lessons from macroeconomics that should be helpful.

Hans Gersbach, 11 February 2008

Tackling climate change is difficult because it requires international cooperation to address global externalities. This column proposes a global refunding system, which would provide incentives for emissions reductions while allowing member countries to choose their carbon tax rates.

Carlo Carraro, Valentina Bosetti, Emanuele Massetti, Massimo Tavoni, 24 January 2008

If the world wants to stabilise atmospheric greenhouse gases at 550 parts per million, massive changes are required, especially in the energy sector. This article discusses means and costs of drastically reducing carbon emissions.

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