That is a very bold statement! And it is not intended to undermine the genuine worldwide concerns about the future of our planet.
So how do we know?
God has a purpose with the earth:
For thus says the LORD, who created the heavens, who is God, who formed the earth and made it, who has established it, who did not create it in vain, who formed it to be inhabited: “I am the LORD, and there is no other”.Isaiah 45:18
His purpose is to fill it with His glory:
…but truly, as I live, all the earth shall be filled with the glory of the LORD.Numbers 14:21
So how will our imminent survival crisis be averted?
Jesus has promised to return to set up God’s kingdom on earth. He will give eternal life to his true followers, raising those who had died. They will be with him on a transformed and glorified earth. People will not be allowed to destroy the earth.
Your wrath has come, and the time of the dead, that they should be judged, and that You should reward Your servants the prophets and the saints, and those who fear Your name, small and great, and should destroy those who destroy the earth.Revelation 11:18
We all have a duty to care for this planet that God created for us. We should be concerned about what is happening to it. But our over-riding priority should be to revere God and to prepare for His kingdom. As Jesus told his followers: ‘seek first the kingdom of God’.Matthew 6:33