Canada’s wildfires have forced evacuations of more than 26,000 people and continue to spread with heavy smoke choking millions of Canadians and Americans and reaching as far away as Europe. Hazardous air quality alerts were issued for parts of Canada and the neighbouring United States. A water tanker air base was consumed by flames in Saskatchewan province, oil production has been disrupted in Alberta, and more communities are threatened each day. “We have some challenging days ahead of us,” said Saskatchewan Premier Scott Moe, adding that the number of evacuees could rise quickly. …Heavy smoke has engulfed part of the continent, forcing residents of four Canadian provinces and the US states of Michigan, Minnesota, Nebraska and Wisconsin to limit outdoor activities. …Elsewhere, extensive forest fires have been raging in Russia’s Far Eastern Federal District since early April, generating carbon emissions of around 35 million tons, Copernicus reported.