Thank you, we're glad you enjoyed it! The Bernoulli bag experiment still feels like it's a trick which is why we decided to keep shot running in real time and show the full length of the bag. No tricks involved!
That is a good eye, that wasn't an error as that video on cross ventilation will be added very soon. We normally get the majority of our views weeks after a video is posted, but we'll try to get that one up shortly as well.
Thank you! We've got more videos like this coming soon! Did you watch our video on how to build a DIY air filter for under $100? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-H6lBCtl8ENo.html