re: Cosmic Rays & Climate Change
"I don't know if this is very convincing. The cosmic ray flux is relatively constant, and if it is indeed modulated by solar activity"
We know this to be true, it's not a "if".
"In other words, even though cosmic rays may be causing the climate to change, the solar activity is the driver that would have been blamed for it, even if it was only a secondary cause."
It's pretty well accepted that Solar activity does play a role in global warming and cooling- unlike the idea that CO2 has.