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Video Duration 02 minutes 22 seconds

Can a concussion legal case threaten the NHL’s future?

More than 100 former professional ice hockey players are preparing to sue the National Hockey League (NHL) in the US and Canada. They are accusing the NHL of concealing scientific evidence of long-term damage caused by head injuries to players.

More than 100 former professional ice hockey players are preparing to sue the National Hockey League (NHL) in the US and Canada.

They are accusing the NHL of concealing scientific evidence of long-term damage caused by head injuries to players.

It’s a topic that is currently being researched in Toronto.

Al Jazeera’s Daniel Lak reports from Toronto.