PeterS wrote:
Why? If we dig it up and burn it (fossil fuels) are you saying it (CO2) can't impact the climate or are you of the frame of mind that man is so small and the earth so big that whatever little pittance we do we can't impact something like the climate?
definitely the former.
obviously we can destroy the environment, at least in the short term. we can't destroy the earth, or life. they've survived far worse than humans. i have every confidence that the earth will eventually shake us off like a annoying dose of fleas. but we can foul our nest to the point that we kill ourselves off. mainly thru pollution. only human arrogance exceeds our ability to negatively impact the earth. we are insignificant but hardly powerless to affect the earth. the examples are everywhere and i am loathe to enumerate them here. it would require an encyclopaedic output hardly befitting this forum.
and clearly there is good evidence that we can affect at least the weather. there are north of 35 ionospheric heaters (like HAARP) around the world, all attempting to weaponize weather. and massive deforestation undoubtedly has proven itself to have an impact. easter island is essentially a desert, tho we know that quite recently it was lushly forested, like most pacific islands at that latitude, and enjoyed bounteous rainfall, and the most probable explanation for the change is the total deforestation by the inhabitants, driven quite possibly by mindless devotion to their religion (all religious fanatics pls take note).
a codicil i would add is that the proponents of many alternative technologies likewise fail to think things thru. if humankind somehow managed to get all of their energy from the wind, is it safe to blithely assume that extracting quadrillions of horsepower of energy from the wind WON'T have an impact on climate. for all we know it could potentially be far worse.
we are most assured capable of affecting the weather. but climate is another matter and the jury is still out. anyone who says otherwise is blowing smoke. smelly, smelly, smoke.
but the plain and simple FACT regarding greenhouse gases is that they have no impact on climate, or if they do, an impact that is dwarfed by the natural cycles of climate that are well established historic events. for 95% of the earth's 4.5 billion year existence, the were NO polar ice caps whatsoever. those are a relatively recent occurrence and to any but the most logically challenged, global cooling is a FAR GREATER THREAT to the continued existence of the present human population.
the most potent greenhouse gas by far, is water vapor, and there is roughly 300 times more of it (on average) in the atmosphere. so the greenhouse contribution of CO2 and CH4 and whatever other trace components of the atmosphere you care to name doesn't amount to as much as a fart in a windstorm.
besides which, i'm all for global warming. when all of that fossilized CO2 was in the atmosphere waiting to be absorbed by the global rainforest and turned into fossil fuel, life on the earth was FAR more diverse and prolific. so contrary to what the doomsayers would have you believe, polar bears and penguins will be just fine if the earth warms up. how do they think there came to BE penguins and polar bears in the first place, if warm climate creatures hadn't been able to adapt when the ice ages arrived?
like i said. 97% of people NEVER think. they feel. that is revealed by the language they use...
"hey, what do you FEEL like doing tonite?"
or
"why did you do that?"
"because i FELT like it."
emotions have their place, but they need to be held in check by reason. emotions arise from a region of the brain called "the snake brain" because all creatures more advanced than snakes have it (and emotions). clearly, reason evolved later, and must therefore offer survival advantages, and therefore must be a superior faculty. even in eastern philosophy/metaphysics, the "head chakra" is ABOVE the "heart chakra." remember this and act (think) accordingly.
it seems i've wandered a bit. NO. CO2 cannot affect climate.