02-16-2014, 09:34 AM
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dumb libs love censorship
Industry Role:
Join Date: Jul 2008
Posts: 8,198
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During the past billion years, the Earth's climate has fluctuated between warm periods?sometimes even completely ice-free?and cold periods, when glaciers scour the continents. In this article, climate scientist Kirk Maasch offers perspective on these historic changes, including the likely causes of the last great ice age?which contrary to common knowledge, we are still in the midst of.
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Although the exact causes for ice ages, and the glacial cycles within them, have not been proven, they are most likely the result of a complicated dynamic interaction between such things as solar output, distance of the Earth from the sun, position and height of the continents, ocean circulation, and the composition of the atmosphere.
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& this comes from that liberal rag, PBS... |
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