by Donna Laframboise, Feb 17, 2021 in BigPicturesNews
We have no hard evidence of a crisis. Only expert opinion and best estimates.
Governments are currently fighting climate change to the tune of billions. For this to make sense, each idea in the following chain of reasoning needs to be bulletproof:
#1 – scientists know there’s a climate crisis
#2 – scientists know it’s humanity’s fault
#3 – scientists know we can alleviate the crisis by changing our behaviour
But each of these amounts to a leap of faith. Let’s start with the conviction that something unusual is going on. This planet is more than 4 billion years old. The climate was marching to its own drummer long before humans appeared. It has changed numerous times – sometimes gradually, sometimes violently. Twenty thousand years ago, much of North America was covered by ice.
Because humans weren’t recording and analyzing those billions of years of climatic history, today’s scientists have no way of knowing if anything unusual is going on now.
They can surmise. They can speculate. They can extrapolate. But they have no smoking gun. I’ve written two books about the UN’s Intergovernmental Panel on Climate Change (IPCC). That organization says it’s “extremely likely that more than half” of the global warming between 1951 and 2010 was caused by human activity. It talks about its “best estimate.”