I have a pet theory. Well I guess it might be only a hypothesis at this point. I do not have a way to test this idea to see if it is probably true or not. I had been listening to conjecture about the disappearance of the dinosaurs and pondering that enigma.
I had the idea that something big accommodated those big things i.e. those big animals and the huge plants they lived in and ate. I decided there was a good chance they lived in big atmosphere. I asked my brother who is a geologist if it was possible for a meteor to hit the earth at just the right angle to blow a lot of atmosphere and water vapor right off the planet into space. He said it was entirely possible. ( If the atmosphere was much denser once, the water vapor would have been much denser too, and the atmosphere of earth might have been very different from what it is today. All this dense atmosphere could have held a lot of solar radiation making the planet a good bit warmer. ) Would gravity bring the stuff right back? Not if the meteor was big enough and dispersed the stuff far enough.
Then one day I saw a drawing of a dinosaur made by someone. The monstrous tail of that beast was drawn sticking straight out horizontally and the monstrous neck and tiny head was sticking out the other way horizontally. That was when I became more convinced my hypothesis was true. How could that huge beast hold himself in such a position? It looked like he was almost floating on water. Well maybe the atmosphere was so dense back then that he almost was.
Those beasts had tiny eyes and were hairless and huge and some had huge things in their heads they made noise with. Sounds a lot like a whale. I had read Desmond Morris's stuff about how human characteristics of high body fat and hairlessness point to the idea of a life form that has been in the water at some critical point of his evolution. I decided that this idea of mine about the dinosaurs might be true.
After the meteor hit the thick atmosphere, that atmosphere and a great deal of water vapor in it might have been blown away. If so gravity would have made it impossible for those beasts to stand up. The tiny mammals that were around then would have inherited the planet.
The element "air" would have morphed then, from a gross material, or the gases of the atmosphere of the planet, to an expression much more subtle. In astrology the element "air" symbolizes things of the mind. Much atmosphere of earth may have been lost, but inwardly, in the increasing brain size of the mammals, intelligence was increasing in a way that no earth life form had previously exhibited. "Air" was morphing. Mammals, still alive on earth after the dinosaurs disappeared, evolved until today we see an evolutionary apex of intellectual sophistication. But now, eons after the disappearance of the dinosaur, this evolutionary apex, the clever brain, may no longer be enough. Again something new is needed.
Evolution ever makes greater and greater wholes. Atoms, in star gravity squeeze, morph from being simple hydrogen to being all the elements of the periodic table. After star-death these same elements, in planets, become molecules, cells, multi-cellular organisms, and finally multi-organism communities. To date multi-organism communities are mostly formed by animal instinct. We see herds flocks etc. Human multi-organism communities are to date not sophisticated enough to make the jump from nationhood to planethood. Something more is needed. At the moment instead of the emergence of a greater whole we are seeing a greater chaos. I have written a prose/poem to try and explain it ...
It is one thing to huddle in a herd
When the mouth of a big cat is the alternative
It is one thing to fly in a flock
When the eagle or condor flies above
It is one thing to huddle in a village
When dark trees and wild things are out there
And unity is strength if cohesion is real
Humans in a small group can hold together
But a species overpopulated and threatened by itself
A species that finds itself to be "The Enemy"
How then huddle in a small group
And trust your fellows?
Where there is a weakness a predator will appear
Is common to animals and humans
It should be no surprise
Humans, being a clever species
Must be controlled by cleverness
And very clever are the games
That fool us into our self-imposed prisons of the mind
Not everyone can continue as is ..there are too many people
Clever humans can see that in unity is strength
If they can corral us into herds of their making
The planet could be theirs