Origin of potatoes found to be in Peru

A study produce by Wisconsin-Madisan University, backed by the US Department of Agriculture, has found that potatoes originated from South America.

Modern Potatoe had Roots in Peru

US scientists have found that all modern varieties of potatoes can be traced back to a single source - a spud grown in Peru over 7,000 years ago.

So far, it was believed potatoes had a much wider region of origin, stretching from Peru to northern Argentina.

What I personally find interesting is the hidden Irony in this find. The spanish helped destroy much of the culture and civilizations in South America. They then brought back what would eventually be responsible for the destruction of Irish society, the dependance on the potato.
The Irish potatoe Famine