Reply #22: Not at all.

[Selatius]

Earth, if we look at its entire history, has been warmer and colder than it is now.

When the dinosaurs were still around, the planet was almost all tropical. It was far warmer than it is now, and that's because there was more carbon dioxide in the atmosphere. Of course, fossilization ended up removing quite a bit of that co2 by placing it in the earth's crust, and now the planet, compared to then, is much cooler, but we humans are putting that co2 back into the atmosphere when we pull up crude oil and coal and burn it. We're basically forcing the thermostat back up, not down, when we should simply leave it up to the planet to set the temperature.