Fluoride is back in Calgary's tap water. Here's what you need to know
After being pulled from Calgary's water supply in 2011, fluoride is now being added back in. The CBC's Acton Clarkin breaks down what you need to know about the mineral, why it's back and how much it's costing locals.
0:28
6:22
1:53
1:03
4:22
1:10
1:26
2:37
1:24
2:00
