CERN and the Science
Re CERN: The work done by Svensmark et al. has gone a part of the way to showing something that could affect climate: Cosmic Rays can create ions, which could cause water droplets to form.
They couldn't generate cosmic rays : the CERN accelerator can. Hence, CERN
can help prove this effect. It would be a worthwhile experiment.
From there to "Cosmic Rays explain all Climate Change", which Svensmark claims, is a huge leap: you need first to prove:
- the small molecules (DMS molecules of 0.1 um size, I think) do grow into large ones, large enough to seed water droplets.
- That water droplets then form, and this leads to clouds.
- That this leads to more clouds than you would otherwise get.
- That this leads to climate change.
Lots of work. You're far from there yet.
Svensmark claimed that the warming up to 1950 - 1980 or so was due to solar cycles, and that temperatures would decline as solar activity declined.
It didn't, as Lockwood shows.
Theres more to it than that, for a detailed scientific discussion, go to the "Real Climate" blog.