'The lost season': Winter comes to a close as Canada's warmest on record / Winter activities in Quebec struggling due to lack of snow on spring break / Environment Canada issues snowfall and extreme cold warnings across parts of Prairies / Near record warmth in Toronto as snowfall and extreme cold affect parts of Prairies / Will Canada's 'wild' winter continue into spring? Here's what to expect / Extreme cold in Canada lets objects freeze 'in midair'