Who do you think the greatest american is?How about for other nationalities

[ingemann]

Norman Borlaug

I agree, I would even make a claim for him being one of the greatest people ever.

[ingemann]

As for Denmark it had to choose, but I lean toward Tycho Brahe with Ørsted being the main competitor, most of the other great thing in Danish history were more teamwork, but Brahe did his work very much singlehanded and created much the raw data necessary for other observations of the universe, while his data would likely have been made by other, it could have happen decades later slowing down much of the natural sciences.