The latest report on global warming will undoubtedly bring more passionate nutcases out of the woodwork.
Scientists in the Arctic Research Program of the National Oceanic and Atmospheric Administration say the Arctic is seeing warming unprecedented in the last 1,500 years. That is not surprising considering that the planet as a whole has been gradually warming ever since the end of the Little Ice Age about 200 years ago. And that was just a warming period of about 200 years. Overall, Planet Earth has been gradually warming up since the end of the last Ice Age.
There have been at least five ice ages in Earth’s history. The last one was the Quaternary glaciation, which started about 2.6 million years ago and is still going on, though you might say it is definitely weakening. During an ice age the world is covered by frozen water. In the warm intervals between ice ages the planet is pretty much ice free, even at high altitudes.