In the U.S., Covid-19 infections are shrinking by the day. In France, officials are preparing to ease lockdown restrictions and jump-start air travel. In the U.K., workers are returning to offices in numbers not seen since the start of the pandemic as the vaccination rollout continues and cases fall. Not so in the oil sands of western Canada, where thousands of roughnecks have descended upon barracks in work camps and have turned the area, which accounts for more than half of America’s oil imports, into a hot spot for a resurgence of the pandemic. It’s the latest blow to the oil-rich province of Alberta that in the past years has struggled with two crude-market crashes, rising unemployment, plus devastating wildfires and floods. Now, the pandemic that’s led scores of restaurants and other businesses to shut in urban […]