The traditional outdoor ice hockey in Canada could be facing extinction within decades due to climate change says a new study. It is said that by mid-century, it may no longer be possible to play ice hockey outside with out artificial intervention Canadian cities are becoming warmer because of increasing urbanization, but there is no missing the evidence on the ground of climate change. “The study gels very much with the observations we have for changes in ice,” Donner said. “This is a theoretical result but we have observations from across Canada showing that the length of time that lakes would remain frozen during the winter has been decreasing, so it follows from that.”

Temperatures are not staying low enough long enough to allow ice to freeze over.