The only global warming that is to be feared (the trumped up kind would overall ultimately be positive) is that which God speaks of:
And the fourth angel poured out his vial upon the sun; and power was given unto him to scorch men with fire. And men were scorched with great heat, and blasphemed the name of God, which hath power over these plagues: and they repented not to give him glory. (Revelation 16:8-9)