It used to be odd ball, religious cult leaders who never stopped warning us the end is nigh. No, it's no longer religious nuts admonishing us to repent and change our sinful ways, its now "climate change" alarmists.
If we do not repent and stop our sinful practice of emitting greenhouse gases, the end is as close as 2050.
And by "greenhouse gases" they mean carbon dioxide. Not carbon monoxide, the poison, but carbon dioxide somthing you and, I and every living thing on the planet, emits as natural byproduct of simply living.
And just as the wise among us ignore the religious nut cases, so should we ignore these nutty carbonphobes.