The popular tourist destination could have as many as 20,000 visitors caught up in the evacuation, according to estimates from officials

An analysis of drug losses reported to Health Canada shows a decrease in recent years, but a steady increase in the proportion of incidents without explanation. The Alberta data is part of a national data set obtained by CBC through an access-to-information request.

By this time last year, more than 1.7 million hectares had burned in Alberta. This year, it's a fraction of that. Here's why that is.