Tornadoes: El Nino may give Canada's twister season a boost

[news]

http://i.cbc.ca/1.1617654.1430842739!/httpImage/image.jpg_gen/derivatives/16x9_460/ontario-is-due-for-the-big-one.jpg An above-average number of tornadoes may be ripping through - and ripping up - Canada this summer, scientists say.


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