Conservative Leader Pierre Poilievre's call for a summer gas tax holiday became a topic of heated debate in the House of Commons this week, with the Conservatives and Liberals arguing over how much the proposal would actually save Canadian families.

Environment Minister Steven Guilbeault says the Conservatives' attack on the federal carbon tax and its associated rebates is based on a "false premise" pulled from a"flawed" Parliamentary Budget Office (PBO) study.

Canada announced Wednesday that wealthy countries have finally reached their goal of providing $100 billion US to help poorer countries both combat and adapt to climate change two years behind schedule.