Throughout the video I was wondering what possible practical applications there could be. I got it at the end: "we use this effect to engage people who are otherwise not so interested in science".
Although thinking about it, water would float upwards too..
I do not know about many places around the world, but in some areas it is normally told to children in primary school that "well, before these milestones you had an important risk of measles or poliomyelitis" - just as part of the history of science and achievements, primary school level. Which again suggests that treating people like adults - even very "underage" - remains an important recipe to obtain, in the end, Adults.
Thoughts?