The earth won't be destroyed by the Americans and Russians firing nuclear bombs at each other. Nor will it be destroyed by man polluting the ozone to the point that all life suffocates.
Earth will be destroyed only by God who is the creator (Genesis 1:1). That will occur on the day the world comes to an end known as Judgment Day, and on that great day the Lord will destroy the earth with fire (2 Peter 3:9-13; 1 John 2:17; Mark 13:31).
Judgment day is the day all men will stand before God and answer for the deeds of their life (Matthew 25:31-46; Acts 17:30-31; 2 Corinthians 5:10; Acts 1:11; Revelation 1:7; John 12:48; Ecclesiastes 12:14).
The reason man cannot destroy the earth is because God said he would be the one who does it, and the Lord doesn't lie (Hebrews 6:18). Another reason man cannot destroy the world is because God has structured the earth so that it cannot be undone by man (Jeremiah 32:27; Luke 1:37; Heb. 1:10-12; Psalm 104:5.
Hope to hear from you or see you at the services.