[noiseman]

You could just as well put a marker in downtown Chicago that says, “A mile-thick glacier existed here 10,000 years ago.” The climate changes, sometimes dramatically, on its own. We have no significant effect, nor can we affect its direction. End of story.

[Dr. Sivana]

We have no significant effect, nor can we affect its direction.

Worlwide, yes. We CAN destroy rather large local systems if we are determined (look at Easter Island and Haiti). We could probably dry up the Colrado River if we put our minds to it. So ... DON'T BE STUPID. But no, we couldn't make the earth 5 degrees hotter on average overall simply by operating cars, factories, and beef ranching.