https://www.europhysicsnews.org/articles/epn/pdf/2015/02/epn2015462p26.pdf
COSMIC RAYS, CLOUDS AND CLIMATE
Henrik Svensmark
National Space Institute
Technical University of Denmark
Elektrovej, Bygning 328, 2800 Kgs
Lyngby, Denmark
The most profound questions with the most surprising answers are often the simplest to ask. One is: Why is the climate always changing? Historical and archaeological evidence of global warming and cooling that occurred long before the Industrial Revolution, require natural explanations.