Watcher wrote: What we do know, the earth is getting warmer, what we don't know for sure is if human activity is the cause of it.
How can you question this??
Yes I know that there are natural factors. But human involvement has kicked everything out of balance and worsened the situation. Need examples?
Look at Australia and what ecologic mess humans have created there by (accidentally?) extinguishing some native species, and even worsened the chaos by introducing foreign animal species which have made matters even worse. There are many more examples of what mess humans have created there. Or New Zealand. The first (Maori) settlers there have extinguished various local species, various giant birds and so on if I am not mistaken.
There are even historic examples from the stone age too. From Europe and from North America. The mamooth isn't the only species humans have very likely exterminated (or at least contributed to the extinction of), there are many indications that various kinds of moose, horses and many others were exterminated in North America and Europe in the moment modern humans arrived there.
Why should today's situation be different? We have already demonstrated time and time again that we will exploit this planet and "Mother Nature" whatever way pleases us, filling our greedy stomachs or greedy pockets as we please ... until it is too late and something stupid happens ... e.g. all the mamooths --our then-source for food-- completely disappear ... or our atmosphere gets so hot that e.g. we here in Switzerland only know snow, cold winters and mountain glaciers from historic documents ... many of our mountains are completely green even during Winter, and Switzerland's oh so famous mountain glaciers have almost disappeared. But of course, green mountains during Winter and violent hurricanes in areas which haven't known this phenomenon before is just the start of it. It can get way worse. Ultimately I think that the movie "The Day after Tomorrow" wasn't so much science-fiction after all ...
We all are the frogs from the video clip, slowly heating up the very kettle we're swimming in.
Watcher wrote: So CO2 cannot be the main factor of global warming.
No, but our CO2 output is the main factor for kicking a possibly natural phenomenon out of its balance. We're not solving the problem, we're contributing to it. And then plenty!
Watcher wrote: and you have the same propaganda going on.
Propaganda is what those various US lobbies are doing, trying to disprove global warming, denying that it is taking place, or now that they can't deny it, they come forward with argument such as "but CO2 isn't even the main factor here ... " Right guys! Just carry on and fill your greedy pockets ... As I said, we're the frogs from that video up there.
Watcher wrote: There is no argument about Global warming, what needs to be found out is what is causing it.
That's not very wise in my opinion, sorry to say that. Whatever the reasons behind global warming, whatever the reasons for this problem are ... the most important thing is that we humans stop adding to the problem. Right now, we're part of the problem, and not part of the solution.
Watcher wrote: Mars too is going through Global Warming according to science. If this is so why did Al Gore not mention this in his film.
Maybe because no human lives on Mars? No human has to live there, no human depends on Mars' atmosphere? So I suppose then that for us humans right now Mars is the last thing we need to worry about and Al Gore doesn't need to mention Mars. Mars can go straight to Hades or supernova or it can go to absolute zero, at 0Â° Kelvin. It is irrelevant for us. We don't live there. We live here.