B.C. Environment Minister George Heyman said the province is looking at restricting the amount of bitumen from the Alberta oilsands to be transported through B.C. as it launches a scientific study of spill responses.  Alberta Premier Rachel Notley all but declared war against B.C. yesterday, saying her government is looking at legal and economic responses. Alberta could sue B.C. and/or impose trade sanctions.  The Province newspaper's Michael Smyth is here with his take on the day's headlines.