Scientists travelling on the St. Lawrence, near Montreal, can see how copious amounts of sewage have impacted the river and our ability to enjoy it.
»»» Subscribe to CBC News to watch more videos:
Connect with CBC News Online:
For breaking news, video, audio and in-depth coverage:
Find CBC News on Facebook:
Follow CBC News on Twitter:
For breaking news on Twitter:
Follow CBC News on Instagram:
Subscribe to CBC News on Snapchat:
Download the CBC News app for iOS:
Download the CBC News app for Android:
For more than 80 years, CBC News has been the source Canadians turn to, to keep them informed about their communities, their country and their world. Through regional and national programming on multiple platforms, including CBC Television, CBC News Network, CBC Radio, CBCNews.ca, mobile and on-demand, CBC News and its internationally recognized team of award-winning journalists deliver the breaking stories, the issues, the analyses and the personalities that matter to Canadians.