Canada Announces Carbon Emission Caps for Oil and Gas Sectors NYT | Top Stories Ian Austen 5 November 2024 at 07:01 The Trudeau government has focused on the oil and gas production industries because the large amounts of energy they use make them the country’s largest source of greenhouse gases. © Todd Korol/ReutersAn oil sands operations near Fort McMurray, Alberta. Oil sands are a production is a major source of carbon emissions.