[aruanan]

The footprints were discovered at the end of a horizontal coal mine shaft on the Norwegian archipelago of Svalbard.

And what about the armored bears?

[Joe 6-pack]

"The footprints were discovered at the end of a horizontal coal mine shaft on the Norwegian archipelago of Svalbard."

Well it's pretty obvious to me....if the hippos were burning coal, there's little doubt in my mind that they had global warming back then, too.