system
Given the following post, respond as if you're commenting on Reddit:
human
[Dune] is there any mention of what happened to Earth during our existence (Modern times-Events of Dune)?

Like that shaped up the way the world is now.
gpt
I believe that in Dune there is mention of "long dead Earth" or something to that effect. God Emperor Leto II remarks in his diary regarding Earth as: "no longer existing".

Earth was the location of the Commission of Ecumenical Translators who composed the Orange Catholic Bible in the aftermath of the Butlerian Jihad. 

According to Legends of Dune The Butlerian Jihad Earth was the site of the first revolt against the machines. The Earth is burned of all life; both human and robotic, by orbital bombardment with atomics. Thus beginning the Jihad.