Reba1, previous changes in Global Temperatures and climate patterns have been caused by "Natural" events, the main one being the amount of Solar Energy produced by the Sun, although Volcanic activity has also played a part and i believe at various times there have been releases of huge amounts of Methane from the Oceans, described as a "Burp", Methane is a Greenhouse Gas approximately 80 times more effective than CO2 in warming the Planet, although its effects are much shorter than CO2, ......... however if you believe the Science, todays warming trend has nothing to do with any of these previous "Natural" events and is purely a product of Human activity in burning Fossil fuels, as such it is a unique event in History, there are no precedents, so i too fail to understand how your question about past warming trends has any relevance to the situation today, ......... but my questions do have a direct relevance to the issue we now face, so i ask you again, how do you think God is going to judge those who through their, ignorance, stupidity , greed, or indifference have brought his world to the brink of destruction?, are we begging his forgiveness for the suffering and destruction we are causing?, and are we going to significantly change our lifestyles to limit as much as possible any further harm to his creation?