The ultimate vanity of our consumer society is the fantasy that the earth itself is a commodity and that once completely consumed we can discard it.
The overlooked circumstance on this planet is its abundant supply of liquid water.
Liquid water is the rarest substance in the universe. Sure there is plenty of frozen water on planets and comets. And there is a lot of water vapor in the space throughout the galaxies. But stable, liquid water is exceedingly rare.
If you open a jar of water in outer space it instantly evaporates. The magnetosphere created by the still molten iron core of the young earth prevents gases from being stripped away and allowing atmospheric preassure to make this a watery place. This has happened nowhere else in the universe that we know of. Eventually the core will cool and the atmosphere and water will be stripped way and the earth will become a lifeless corpse.
Of the three divisions of science that we study; physics, chemistry, and biology. The only one that still exists without liquid water is physics. Chemistry and biology do not apply anywhere else that we know.
“I really don’t know why it is that all of us are so committed to the sea, except I think it’s because in addition to the fact that the sea changes, and the light changes, and ships change, it’s because we all came from the sea. And it is an interesting biological fact that all of us have, in our veins the exact same percentage of salt in our blood that exists in the ocean, and, therefore, we have salt in our blood, in our sweat, in our tears. We are tied to the ocean. And when we go back to the sea – whether it is to sail or to watch it – we are going back from whence we came.” John F Kennedy, 1962