Canada’s retaliatory tariffs, toxic air in hockey arenas, France art heist, and more

Canada returns fire in the ongoing trade war with the U.S.. Businesses are already raising prices in response. And that will hit consumers right in their wallets.And: The air in local hockey arenas is filled with more than the shouts of excited parents. The Canadian Medical Association says carbon monoxide is an invisible threat on the ice.Also: Authorities in France are trying to get to the bottom of a brazen art heist at the Renoir Museum on the French Riviera.Plus: Questions for Bombardier, sanctions on goods from Israeli settlements, the air at Ground Zero, and more.