[Buckeye McFrog]

then how come it’s SO FRIGGIN’ COLD THERE?????

[Telepathic Intruder]

The atmosphere of mars is only 1% as dense as Earth's. There is no doubt that CO₂ is a greenhouse gas, but there are other factors which the alarmists either don't realize or don't want to. It's a very mild greenhouse gas compared to other things like methane or water vapor. The Earth also has a carbon cycle which scrubs CO₂ from the atmosphere naturally. And of course, plants breathe it. The more CO₂ there is, the better plants will grow.

[familyop]

"then how come it’s SO FRIGGIN’ COLD THERE?????"

Low atmospheric pressure, thin atmosphere, quick thermal losses. If you go to a high elevation/altitude on earth here (like my place at around 9,200 feet), you can feel a little bit of the effect in winter. Even in the summer, intense sun effect can be felt, even at mildly low temperatures. When a cloud rolls over, the temperature drop is surprising to visitors. With peaks only a few miles to the west and most often a west wind, temperature changes of even higher elevations are felt (~ 11,000 to 14,000 feet, winds swooping down to 9,200).

The lowest low that I've spotted here was -39 F last winter (hope to upgrade PV solar plant enough to get the weather station mounted and connected to the Net, as other stations are too far downwind and warm to get needed location data). Wind gusts hit over 110 mph in winter, BTW (quick thermal losses at altitude, varying elevations and temperature clashes).