I kind of think that one huge reason the earth changed climate is because of Volcanoes. Also causing animals to die off…
After an eruption the air is hard to breath and the climate is affected. What is known as the little ice age is thought to be caused by a volcano. Iceland is known for the past 300-400 years to cause huge climate cooling in Europe and North America.
JUST A SMALL ONE In 2009 Redoubt (in Alaska located under a glacier) by Feb 10, 2009 it Redoubt already melted about 2,000 Olympic size swimming pools it did not even go off till March 22 there was 6 major expiations and ash went 60,000 feet in those 2 days. Between March 22-28 there had been 18 major explosions 40,000feet into the atmosphere. About 23 million cubic meters of ash fell around the Cook Inlet area.
This is a Video of Mt. Vasuvius in Italy. It killed a WHOLE LOT of people! The people are frozen in time and you can even see some of their last facial expressions. It’s CRAZY!!! PS people still live in this area and there is one high way out…. 600.000 live in the red zone!!!!!
\http://www.youtube.com/watch?v=gmwylbF3-CA&feature=related
Caldara volcanoes can be 2 – 100km across and normally are the most explosive and can have the other 2 types of volcanoes form inside of them. They are also known as Super volcanoes for example Yellow Stone (2 million years ago Yellow Stone erupted 600 cubic MILES of magma)
http://www.youtube.com/watch?v=gmwylbF3-CA&feature=related