Google dedicates today their doodle to Nicolas Steno, who is considered as the father of geology and stratigraphy. Steno was born in Denmark on a 11th of January, in 1638. Happy 374th birthday, Steno!!
Check www.google.com, or your regional version of Google, and you will see the doodle in action.
Isn't nice to see geology portrait in such a colourful way? I love it!