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Despite significant progress in climate change mitigation in industrialized countries, agriculture is so far barely subject to explicit regulation to reduce greenhouse gas emissions (GHGs). Yet the global food system on its own may preclude achieving global climate targets if not substantially regulated. One reason for the absence of regulation is that politicians feel generating public support and societal consensus for climate protection measures is hardest in this sector. Here we argue that some form of pricing of GHG emissions is necessary for mitigation and that it is politically possible in the European Union.