Iāve been thinking a lot about rocks lately, and Iāll tell you why
On every continent where there is sedimentary rock of an appropriate age
There is a thin grey lineĀ
It is called the K-T Boundary, aka the Cretaceous Paleogene Boundary
Below the line
There is an incredible diversity of life
Giant terrestrial reptiles, swamps, forests, birds, insects, mammals of all shapes and sizes, you name it, itās probably there.Ā
But above the line?Ā
Nothing.
Absolutely nothing.Ā
The line is made of iridium, in an amount that doesnāt occur naturally anywhere on this planet, now or then|
We all know the story, itās one of the first you are told when you enter school
āThe dinosaurs roamed the earth, until one day a comet came down and made them all disappearāĀ
Except, they didnāt just ādissapearā, though explaining that to a group of kindergarteners is a little more difficult than it soundsĀ
Because how do you tell a five year old that there was once a bizarre, vibrant, beautiful alien world-
Except it wasnāt alien, because it was here where we are right now-
But then something ended it abruptly, violently, and that something came from outer space
Did you know that when rock was vaporized and melted by the force of the meteorās impact, it shot into the atmosphere, and the way that it recrystallized meant that for a little while as the world ended, it rained black droplets of glass?
This is why we know it was springtime in the Northern Hemisphere when the event occurred
In North Dakota, there is a deposit of lake fish that died in the blast, and they died with these droplets of impact glass in their gills.
And in those same last breaths where molten glass that was once rock embedded itself into their bodies, they also breathed in pollen, because flowers were blooming
Flowers blooming at the end of the world, the poetry writes itself
Did you also know that the sun went out for at least months? Probably years?
And there were birds
And there were dinosaurs that were closely related to birds
We donāt know if any these animals had the kind of cognition that crows do
But even if they had a sliver of the intelligence we see in their descendants, we have to reckon with the fact that something knew that the world was ending as it was happening
Itās tragic, not because we know how the bird or dinosaur or bird-dinosaur hybrid was feeling, we can never know that
Its tragic because it was alive
And the fish in that lake were alive
And the flowers that shed the pollen into the fishās gills were alive
And the algae that the fish ate was alive
And at the end of the day their aliveness wasnāt fundamentally different than our own
They needed to breathe and eat and rest just like us
And they died, just like we will one day
And we hope that it wonāt be in a mass extinction event
But Iām sure if the fish, the birds, the flowers and the algae knew what we do, they would have hoped for the same thing
And really, how much more power do we have than them to stop something so completely cataclysmic?Ā
I found a photo of the men who discovered the K-T Boundary
Father and son, Luis and Walter Alvarez
And to my shock
The photo was in color
Their theory of mass extinction by comet was published in 1980, only four decades ago
And wasnāt endorsed by an international scientific organization as the primary theory for the disappearance of dinosaurs until 2010, 15 years ago
Do you know how long that is in the timeline of our planet? That which has seen creatures so much larger than us rule the planet for longer than we can even conceive of time? Not even half a blink of an eye, that is how long we have known concretely how an era of our history spanning 66 million years ended
The earthās history is teeming with life and therefore also death
That which lives must also die, and sometimes we as humans get so caught up in the fear of our own death that we forget we are such a small piece in the tapestry of our world
And looking at any tiny part of it up close gives you a little glimpse at how enormous and beautiful and sad the entire story is
Iāve been thinking a lot about rocks because they remind me I am so much more than the sum of my parts, that my very matter is made of the same stardust that made the dinosaurs
Nothing is ever created or destroyed according to Newton, and little did he know the connection to the past that his theory gave us
Knowing that a little piece of us existed in every age of this world, long before we were even an idea is its own form of immortality
And if that which is me but was also a dinosaur can look at the sky as it rains glass and the world crumbles around it, I think I can find the will to know that the world will go on whether humans are here or not
And maybe if I live to see the world end, maybe that which is me but was also a dinosaur will transform into something neither of us could have ever imagined, and what a beautiful wondrous thought that is