School boards take aim at four big social media platforms - launching a multibillion dollar lawsuit claiming they need to mitigate the costs of the mental health impacts. Also: Premiers across the country are raging over the April 1 increase to the carbon tax. The Prime Minister says they aren’t giving Canadians the whole story. Plus: Several arts festivals across Canada have been forced to scale back, or shut down because of inflation, the after-effects of the pandemic and a lack of funding.