evidence: Some scientists did wonder if the mid-century cooling was a sign of the next ice age on the way, but even back then they were distinctly in the minority. There were a couple of high-profile media reports on the possibility of a coming ice age, but the vast majority of scientific papers even then were concerned with warming, from greenhouse gas increase. [...] This aside though, the timing is right for the next ice age to come around soon. For the past two and a half million years, the Earth has experienced regular ice ages, related to slow changes to earth’s orbit around the sun and changes in the earth’s axis of rotation (Milankovitch cycles). We are currently in one of the warm periods (interglacials) between ice ages and the present interglacial should be ending about now. The catch is carbon dioxide. [...] Now, carbon dioxide levels are over 400 parts per million and are likely to stay there for thousands of years, so the next ice age is postponed for a very long time. We will be living in a warmed and changed climate for many generations to come.