Plenty of those whose scientific credentials far exceed my layman's grasp state that current and projected levels of atmospheric CO2 have, and will have, a minuscule effect on the global climate. These is no consensus on the effects, if any, of human emitted greenhouse gasses on the overall climate, in spite of the religious fervor of the GW alarmists..
The people you are listening to are simply wrong--"miniscule" is inaccurate. What the precise level is that will cause dire effects is, admittedly, debated. But that there will be--in fact already are--bad effects is undebatable except by charlatans or aid shills.
>>Too much of it in the atmosphere, and the planet will warm up.
Straw dog. Too much of anything will cause changes. Drink too much water and you will OD and die..
The question is, what is too much? The vast majority of scientists today think that somewhere between 450-500 ppm is too much. Some think that we are already at the "too mcuh" stage, and that chain reactions have begun that we are already starting to pay and will pay even more dearly for over the next century. Birds changing migration patterns, plants moving further north or higher up mountains, ice shelves melting and breaking up, oceans becoming more acidic, increasing drought and desertification in some places with increased rain in other places, glaciers disappearing, earlier snowmelt and less snow on mountains in winter--these things are observable, predictable and happening right now. They are all consistent with the chain of events predicted by scientists who have studied climate and thought about the consequences of higher levels of CO2 in the atmosphere.
Whatever, it is absurd to keep talking to someone who won't bother reading anything and is determined to remain ignorant. |
