What is the process of growing plants in an air or mist environment without the use of soil called?

I would like to try this process of growing plants.

Fascinating. I'd never heard of this or aquaponics. It's great to have these new agricultural technologies, but it's getting really late for them to have a significant impact.

But how to keep free from pests?

like medicinal petri dish Marijuana

Nice place to grow pot, I think, not sure!