20/21 July 2019
70 kms (44 miles)
There were times when the earth warmed. This happened over thousands or hundreds of thousands of years. And then there were times the earth cooled, over thousands or hundreds of thousands of years. And it did this again and again, on timescales too huge for most to comprehend. There were five mass extinctions along the way, wiping out 70 – 96 percent of life on Earth each time.
And then man arrived. And then there was the Industrial Revolution. And then the climate began to warm at unprecedented speed – in a couple hundred years instead of thousands or tens of thousands. And so also began the 6th mass extinction event – we are living it now.
I’ve gazed at the KT-boundary in walls of rocks – that thin line of history 66 million years ago that saw 76 percent of all life wiped out. Such a thin line. And so we tread another one now.
Anyone with any understanding of geology and the time scales involved cannot help but be alarmed by the trend lines on those climate graphs. There is nothing to believe or not believe about climate change. You either understand the science or you out yourself as scientifically illiterate.
Yet those humans and their contribution to a rapidly warming climate are helping me set my own record this weekend. Read more