Climate "Science" Questioned

Writing in the Toronto Sun, John Robson makes the point that we simply don't know what causes climate variation. Historian Robson chronicles some of those early climate changes.

Climate varied dramatically, long before humans had the ability to do anything to affect it. We don't know what caused those variations, we know is wasn't us.

Since we don't know what caused climatic variation in the past, we are unlikely to know what will cause it today. That includes whether or not human activities will influence it. To call climate speculations "climate science" is serious exaggeration.