It begins a moving album that addresses brow-furrowing issues — war, ecological collapse and religious dread — while giving equal significance to a deep belief in the essential goodness of humanity.

Why would we want to leave this place in order to explore the blackened waste of consumer frenzy followed by ecological collapse?

Other looking glasses open to worlds with hostile environments and set off panic about planet-wide ecological collapse.

In some cases, it leads to ecological collapse, trophic cascades and the death of many species within the ecosystem.

On-site impacts include decreases in agricultural productivity and (on natural landscapes) ecological collapse, both because of loss of the nutrient-rich upper soil layers.