“A book ban, to us, is any time a book that was previously available to a student is no longer available based on the content of the book,” Meehan says.

"They are these tiny little products, and it's hard to imagine that they can be such contributors, but it's an eminently fixable problem," a study co-author said.

Disposal of clear water waste into Calgary's wastewater system, including a manhole or monitoring access point, is prohibited ...