It has been going on for the last 20,000 years.
That's back when New York and the northern part of North America were buried under a 2 mile thick glacier known as the Laurentide ice sheet.
In other news...
Forget Global Warming: Winter is Coming — and It Will Be a Doozy
July 16, 2018…
For the last approximately 2.5 million years the Earth has been cycling in and out of long glacial periods, punctuated by much shorter warm interglacials. For the last one million-plus years the planet has been in 100,000-year cycles of ice advance and welcome warming.
The last ice age ended about 11,500 years ago, enabling humanity to prosper and advance.
…
Bad things happen during cold periods, very bad things. The most recent cold era is referred to as the Little Ice Age (1250-1850), and it brought severe hardship and death.
…
When is the next glacial advance expected? Interglacials typically last 10,000 to 12,000 years and we are now nearly 12,000 years into our current one. The authors of a detailed analysis of Antarctic ice cores reported that our current interglacial is “by far, the longest stable warm period recorded in Antarctica” during the past 420,000 years. So the next glacial advance and the accompanying true climate catastrophes may arrive in the next hundred or so years or we may be spared an icy apocalypse for more than a thousand years. However, it is coming.
It has been going on for the last 20,000 years.
That's back when New York and the northern part of North America were buried under a 2 mile thick glacier known as the Laurentide ice sheet.
If Gates wants to be remembered for his climate activism his best bet would be to help figure out those living north of Pittsburgh will survive the next glaciation.
