A federal advisory panel is recommending the creation of a carbon tax or carbon-trading mechanism to help Canada reduce greenhouse-gas emissions.
The politically controversial recommendation is among a host of policy prescriptions offered by the National Roundtable on the Environment and the Economy.
The panel suggests the measures would help to reduce Canada's emissions 65 per cent by 2050.
The panel includes some of the country's top business and environmental leaders, but its recommendations are non-binding.
Both Prime Minister Stephen Harper and Opposition leader Stéphane Dion have in the past rejected the notion of a carbon tax.
Some of the world's top environmental economists, however, have said taxing carbon is the only effective way to dramatically reduce greenhouse gases in the atmosphere.
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Is a carbon tax or carbon-trading the way to go to reduce greenhouse-gas emissions?