The Bible clearly commands us to take care of the world God created, and we ought to do all we can to protect our environment. God put Adam in the Garden of Eden, we are told, "to work it and take care of it" (Genesis 2:15).
At the same time, the final chapter of the world will be written by God, not by us. The future is in His hands, and the world as we know it will be finished only when He brings it to an end. God is sovereign, and the world in its present form will not end until God intervenes.
When that day arrives, Christ will come again to banish all evil and establish His Kingdom. The Bible says, "But in keeping with his promise we are looking forward to a new heaven and a new earth, the home of righteousness" (2 Peter 3:13). This is what the Bible calls "the blessed hope–the glorious appearing of our great God and Savior, Jesus Christ" (Titus 2:13). Never forget: Our ultimate hope is in God, not in any scheme of men.
Does this mean we shouldn't be concerned about our environment? No, of course not. God made the world, and it is wrong for us to misuse it or treat it with contempt. But even more important is something else He made: our souls. God loves us, and He sent His only Son into the world to cleanse us from the greatest pollution of all–the pollution of sin. Turn to Christ today and ask Him to cleanse you and remake you from within.