The evidence base

Anyone wondering why we suddenly find ourselves in the midst of a climate crisis, here is how it happened.

Just over three decades ago, climatologists around the world began to share their observations on the warming of the planet in the development of a scientific evidence base for decision-makers. It happened under the auspices of the Intergovernmental Panel on Climate Change, aka the IPCC.

The IPCC described how carbon dioxide and methane, among other gases, let solar radiation into the atmosphere while preventing the resultant heat from escaping, much like the glass panes of a greenhouse. It described how the increasing production of greenhouse gases since the Industrial Revolution has been slowly warming the planet and would continue to do so by several degrees Celsius within 50 to 100 years.

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