Unable to find grocery items, more shoppers want limits placed on items as others turn to delivery services.
It is estimated that a billion new trees will need to be planted to meet the rising demand.
"This is a new phenomenon because it's something that we never had in this country: crimes committed because of hunger."
The Pyongyang University of Science and Technology (PUST) was founded by evangelical Christians and opened in 2010, with students generally the children of the country's elite.
Venezuela imposed a two-day week for public-sector workers to save energy.