The world is palpably warmer today than when we were children. Likewise, it was not always the case that summers were characterized by weeks of choking wildfire smoke.

Who are you going to believe: the warmth felt by your own skin, or the people telling you that nothing is wrong, and that global heating isn't something to be concerned about? Psychologically it's more comfortable to choose the latter because it implies things can stay the same without trouble. But it's only viable to do so if you can suppress the cognitive dissonance.

The planet is burning.