The evidence seems to be piling up: We are our own worst enemy.
We are clever, greedy little bastards. Which worked for us for thousands of years to be fruitful and multiply.
But what may have worked to our advantage has been at the expense of everything else.
We forgot we live in an ecosystem, and if we conquer that, and try to re-engineer it, well, I guess we will find out the limits of our own cleverness.
Kill the ecosystem and the clever, greedy little bastards are fucked too!