Trudeau urges global carbon tax at COP26 summit

Canadian Prime Minister Justin Trudeau urged world leaders to negotiate a minimum price on pollution at the COP-26 climate talks in Glasgow, Scotland.

Trudeau said Canada's carbon price as one of the most ambitious in the world. He compared the idea to the 15% minimum corporate tax that more than 130 countries have agreed to implement in a bid to stop big multinational corporations from avoiding taxes by funnelling their profits through low-tax countries.

Carbon pricing has been highly controversial in Canada and taking their fight all the way to Canada's highest court. As the climate change conference unfolds in Glasgow, Scotland, world leaders have promised to protect Earth's forests, cut methane emissions and help South Africa wean itself off coal at the U.N. climate summit on Tuesday.

Experts and observers said fulfilling pledges will be critical to limiting climate change, but many noted that such grand promises have been made in the past - to little effect.