This study shows that the earth will be around forever, from generation to generation. However, God will renew the earth so that it will be a perfect and peaceful place. Individuals in this present day world, who are mentally and physically challenged, will no longer have disabilities. Mankind and the animals will live together peacefully. People will live forever not learn war anymore. Never again will there be sorrow, pain or death.

A Renewed Planet! 

Ecclesiastes 1:4  Generations come and go, but the earth will remain forever.  

Psalms 37:9-11, 29, 34  The meek (gentle) people will inherit the earth and live on it forever.  

Isaiah 2:2-4  All people will serve one God and will no longer wage war. 

Isaiah 35:4-7  No physical disabilities will exist for humans on the renewed earth - new earth. 

Isaiah 65:21-25, 17  The earth will be renewed, no one will labor in vain, everyone will live peacefully, including the animals.

Revelation 21:4-5  All made new - no more wicked and no more sorrow, pain or death. 

Additional references for further research:

Isaiah 45:18
Ezekiel 34:24-28
2 Peter 3:13
1 Corinthians 2:9-10