Non Traditional Art - Nimbus Clouds

I was using Stumbleupon the other day, the website that make me procrastinate even more, and I found this artist. I was completely BLOWN away. Berndnaut Smildeas, a dutch artist created something that is only seen in the skies. Clouds. WHAT THE HECK. 

With the right amount of smoke, moisture in the room and a specific temperature he was able to float clouds around empty rooms in a museum. This is something that takes alot of creativity in my opinion. Who sits down one day and just says " Today I will make a cloud". I think is just insane. I also think this takes alot of skill. I mean you are making a cloud. Even though he says that they do not last very long before disappearing altogether, this is something I would  kill to see in person. Just imagine sitting in a room filled with clouds. I would be in heaven...