My comments in the post you answered here were my answer to what a world without the promises of God may expect, whether sooner or later.
Just before that I answered what the promises are that believers can expect to happen to earth, a global government that rules all nations, has done away with war, restored nature to a balance with man in which we no longer rape our planet while also function as caretakers of it, bringing it and us into a kind of Paradise condition.
Naturally, atheists cannot believe this, but this is what believers are promised. The promises without God's assistance are fairly clear. We are facing rising seas that shall cause huge changes globally as the seas rise since many of our most populous cities and countries are quite low level and already suffer from rising waters. The changes all of this brings on the food chain, on growing food is nothing but disastrous. There is clear danger of war about resources from all of this, and already China is showing its teeth because of preparing for these problems. We have nearly exhausted the resources of fish. So, while you may believe the earth will bounce back, before that it shall indeed bounce, but in our faces first.
The rising seas will also affect volcanic activity since the gravitational changes resulting on the tectonic plates due to pressure released from the buoyancy of the waters. Already, we see a large increase in volcanism around the globe; I would think this related to the rise of the seas. Perhaps there are other reasons for this, but it is at least a contributing factor in this problem.