Culture growth on an agar plate.
Ever seen what happens to colonies of bacteria when they run out of space and nutrients on an agar plate? They all die at once. Is this where we are headed or will we as humans have the sense to end the non sustainable habits we have? God told us to be fruitful and multiply but not to breed ourselves and all creation to death. If you are an atheist or agnostic take it as a metaphor. We will all pay for our mistakes.