Kenneth Chang

OH, no! Greenhouse efect on Mars to?!

Yes, there are greenhouse gases on Mars too. As well as 800-degree-F Venus. That's pretty good confirmation that pumping CO2 into the atmosphere causes global warming.

So...The CO2 on Mars and it's temperature inflation prove that global climate changes could came from natural phenomenon. This conclusion is based on astronomical observation. Isn't it?

Obviously, natural phenomena can cause global climate change. It does not follow all global climate change is caused by natural phenomena, and basically everyone (even the deniers) agree that the rising CO2 is not natural.

The present global warming theory fails to prove some events, like medieval warming period and interglacials. Superimposed phenomenons (CO2 emissions and astronomical effects) are not taken in account.

That's like complaining about Newton's laws of motion because they don't take quantum mechanics into account and fail to explain the motion of photons.

This comparison is absolutely out of scale. It's more similar to consider only lunar effects and ignore the influence of sun over the ocean waves. Temperature measurements have bias due to urban heat island. This data feeds a global model! This is far from quantum analogy.