An quote from the article:
This event, known as the Paleocene-Eocene Thermal Maximum, saw temperatures up to 60 degrees Fahrenheit (16 degrees Celsius) above modern levels
https://www.bbc.co.uk/programmes/b08hpmmf is an interesting and accurate discussion of the Paleocene-Eocene Thermal Maximum.
The sky is falling soon...promise.
An quote from the article:
I think one cannot assume that anything in this article is correct.