I found this video to be very interesting so I'm sharing it here.
Yes, there are a few statements that could be taken to task (I don't think glass "blocks" 100% of UV light, but I could be wrong on that)
Oh, if you want to preserve your sanity, avoid reading the comments below it. ;-)
https://m.youtube.com/watch?v=o9BqrSAHbTc
