Editor’s Notice: Indication up for Unlocking the Planet, CNN Travel’s weekly e-newsletter. Get news about destinations opening, inspiration for foreseeable future adventures, furthermore the latest in aviation, foodstuff and consume, the place to keep and other journey developments. CNN  —  1st it was ski resorts not becoming able to work owing to the climate disaster. Now, the world’s most significant out of doors ice rink is struggling with the probability of a period entirely shut, thanks to a absence of ice. Confirmed by Guinness to be the world’s largest normally frozen ice rink, the Rideau Canal Skateway in Ottawa sees much more than a million readers each year. The 4.8-mile…