Globe and Mail: In periods of changing climate, winners can quickly become losers – and vice-versa, especially when it comes to the ready availability of fresh water. In that regard, Alberta is emerging as the province to watch as the effects of anthropogenic global heating play out across Canada. Even in the 20th century, now known to be the wettest of the past several, some parts of southern Alberta had average evaporation that exceeded average precipitation. Without water from the snow packs and …