This video describes the characteristics of ice ages during the last billion years. We discuss why ice ages happened and how and why climate varies in short-term climate cycles during ice ages. We introduce the term "albedo" and use it to consider how the glacial system is affected by feedbacks that can either increase or reduce the volume of glacial ice.
At the southern end of the Moreno Valley lies Black Lake, New Mexico, a quiet natural lake where Paulette and I watched for elk, waterfowl, wild turkeys and black bears. It also became Montana for portions of the classic Lonesome Dove miniseries.
I headed north with an old chainsaw for my son and cameras for myself. What followed was a rainy September journey through the Rio Grande Gorge, Taos Canyon and Angel Fire, where autumn aspens and a remarkably calm flock of wild turkeys turned an ordinary errand into a very special day.
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