Glacier FarmMedia – The Canadian dollar retreated on Thursday while crude oil prices turned higher. The loonie closed at US$0.7223 or US$1=C$1.3844, compared to US$0.7246 or C$1=C$1.3801 on Wednesday. The United States Dollar Index gained 0.41 of a point at 100.01. Crude oil advanced after U.S. President Donald Trump warned Iran on