World famous atmospheric scientist Mikey Mann thinks that water vapor makes the air more dense. So why does water vapor rise, and nitrogen vapor migrate horizontally?
One might expect that an atmospheric scientist would understand the simplest fundamentals of the physics of the atmosphere. Severe storms often form when cold dry air wedges under a mass of warm moist air. The warm, moist air is less dense and gets forced rapidly upwards.
I worked in a geochemistry lab as an undergraduate at ASU. One day we had a safety inspection and “Mad Hank” poured a flask of liquid nitrogen into a sink full of water, a few seconds before the inspectors arrived.