One of the most important videos on fluoride and fluoridation — at least over the past year or so — is an hour-long presentation and Q&A from this past March, hosted by the Wisconsin Environmental Health Network. The presentation is by Professor Christine Till, PhD on her landmark studies looking at fetal and infant fluoride exposure. She is an award-winning researcher, adjunct scientist to the Neurosciences and Mental Health Program at SickKids, and associate professor of Psychology at York University.