Some of our "definitions" regarding Earth climate change need clarity. First is the "ice age." What is it? What causes it? Let's start with our very own one, the North American Ice Age (note continent specific, not planetary) http://www.britannica.com/science/i...reas-are-those-that-were-covered-by-ice/54572 That's where the glaciers were 1-10 million years ago. Now, they are gone. Most of the tippy toppiest "top climate scientists" paint "ice ages" as freezing everything, not just specific continents. In reality, ice ages are continent specific, since glaciers advancing over ocean water have a habit of breaking off and becoming icebergs... Take Greenland. With North America covered with ice down to Indiana and beyond a million years ago, Greenland should've been buried under ice too according to the tippy toppiests, but, alas, that's not what THE DATA says... http://www.livescience.com/7331-ancient-greenland-green.html "The DNA is proof that sometime between 450,000 and 800,000 years ago, much of Greenland was especially green and covered in a boreal forest" So what happened? During the North American Ice Age a million years ago, Greenland was not buried in ice, but rather was thriving with forests. That makes the tippy toppiest definition of "ice age" well, WRONG. They say everything froze, but only NA was frozen. In reality, during the past million years, Greenland froze while North America thawed, all at THE SAME TIME ON THE SAME PLANET WITH THE SAME ATMOSPHERE WITH THE SAME AMOUNT OF CO2 IN THE ATMOSPHERE... which proves CO2 had precisely NOTHING to do with either event. What did change? LOCATION The tectonic plates moved. Yes, they moved 25-60 miles or so, but that was enough to force the "climate change." Greenland's plate is moving NW. It is a great example of how an ice age starts. As the plate got closer to the pole, about 600 miles or so, the winters got so long and the summers so short that the annual snow accumulation failed to fully melt. Then it started to stack. Once it starts stacking, that's the start of your ice age. The current Greenland ice age started up north, and as the glaciers grew, they pushed south. When the Vikings first settled Greenland 2500 years ago, they were able to farm on the southern tip. Around 1400, they were forced to leave, as the ground stayed frozen and the glaciers were approaching, making farming impossible. Greenland was a big Global Cooling talking point in the 1970s. Greenland is now where the top of Northern Canada was 15 million years ago. Our plate, the NA plate, is moving SW, but actually is on the same vector as Greenland; we just passed the pole and kept going. And, yeah, while the warming of the NA plate moving away from the North Pole helped melt the NA IA ice, the last eruption of Yellowstone 640k years ago must also have helped that cause. So, in short, ice ages are continent specific, and they come and go as the plates move, while CO2 has precisely nothing to do with them...
