Thought I'd single out this talk by Dr. Richard Steeves as it is a good layman's understanding of how radiation can both cause cancer and also be used to cure cancer.
Again, every TEAC7 video release (as they're flipped to public) can be monitored here: https://www.youtube.com/playlist?list=PLKfir74hxWhNaq7WuzLHzlZHhuTVuIlgq
I'm now putting "Day 3" into sync... that's Berkeley, Per Peterson, a couple students, and CIET. There were 2 teams recording simultaneously all day (parallel tours) so a lot of footage.