While pandemic measures have kept cold and flu season at bay, this winter could be different due to eased restrictions. The trio of viruses infecting Canadian children, the impact on the health-care system, what's making the problem worse, and the government plans to do about it. Russia's aggression has renewed concern about the state of Canada's Arctic defences. In a Global News exclusive, Jeff Semple heads on a Canadian Navy icebreaker to learn what's being done protect Northern waters. As smaller countries demand wealthier nations pay for climate change damages, there are concerns about the surge in fossil fuel lobbyists attending the COP27 summit. Why the oil and gas industry says its presence is important, and where Canada fits into the equation of solving the climate crisis. Plus, a mission to solve a mystery. Why Canadian veterans are being asked to donate their brains.