OTTAWA - Federal Environment Minister Peter Kent is in London today to kick off another global tour to sell Canada's record on global warming.

Kent says new controls on oil and gas emissions are on their way, but companies will need a better price for their crude in order to be able to deal with a new regulatory burden.

He says that if the so-called Canada discount can be reduced, then companies will have enough money to invest heavily in new technology that will reduce emissions.

A better price requires approvals for pipelines such as the Keystone XL project to send Canadian crude to tidewater in Texas.

But in the complicated world of climate change politics, those approvals also depend on Canada showing the world it is cracking down on emissions.

Kent's roadshow follows a similar trip by Natural Resources Minister Joe Oliver through Europe last week, and will be augmented by Prime Minister Stephen Harper making the pitch to Wall Street on Thursday.

Kent says he hopes to lower the temperature of public discussion around the environmental record in Canada's oil patch.