As you have doubtless learned in many contexts, humanity now faces some major problems of sustainability.
Owing to our rapidly increasing population and the resource demands we place on the planet and the glut of wastes we produce, the viability of our biosphere is declining: much of life on Earth is endangered.
What ideas do you have for changes and improvements that societies need to effect so as to ensure the health of our Home Planet?
And how might you in particular become less of the problem and part of the solution? What are you already doing in that regard, and what should you do henceforth?