But the researchers did much of their work with a phureja a kind of a potato that has only one copy.

VOA: special.2009.11.03

Potato shortages caused at least one million deaths and a wave of Irish immigration to America.

VOA: special.2009.10.20

Potato shortages were blamed for at least one million deaths.

VOA: special.2009.11.03

One such hot potato is taxes.

VOA: special.2009.12.06