There's a VERY interesting, fascinating site on the web - http://www.zetatalk.com
Its source is rather controversial (some may argue), but its CONTENT is amazing.
Have you heard about Ice Ages, frozen mammoth's and End of the World predictions? Then throw away all your reference "scientific" books - it is all complete nonsense.
ZetaTalk presents the most comprehensive theory of Geological and recent Climate change I've evere came on.
I prepared a presentation that was presented in English discussion club in my native town Drohobycz (Ukraine) and you can download it HERE.
for further reference see http://www.zetatalk.com
Think for yourself! Make your own investigation!