Professor Henrik Svensmark is the head of the Centre for Sun-Climate Research, at DTU Space, Technical University of Denmark.
Since 1997, Svensmark spearheaded the idea that solar activity variations affect climate on Earth, through solar activity modulating of the cosmic rays reaching the Earth and the effect that these particles have on cloud cover. This idea received a significant boost with the SKY experiment that he headed, which showed under laboratory conditions how the ionization caused by cosmic rays gives rise to the formation of condensation nuclei, a necessary step in the formation of clouds.
This idea is the main theme covered in the documentary The Cloud Mystery (this link includes more information about Svensmarks theory about Cosmoclimatology as well as links to other scientists involved in the research findings. The Cloud Mystery Dvd can be ordered online as well)
You can go to Svensmarks Home page at DTU SPACE.
Here is a brief and simple overview of Cosmoclimatology.
