Climate change warning: Greenland once melted and raised the ocean 5 feet.

OTTAWA — The new frontier of government accountability could be a colourful AI-generated image connecting the dots between all the different players in one of Canada’s messiest procurement controversies. The Phoenix pay system, which was designed to centralize payroll for the federal government but quickly racked up a long list of issues including overpayments, underpayments and missed payments, is estimated to have cost nearly $5 billion. The replacement software is now estimated to cost more than $4 billion, putting the total price tag of the calamity at nearly $10 billion...