Famines have always been geographical. So have plagues.
The world wide calamities of today are a thoroughly modern phenomenon. Aids in Africa flashes around the world. A corn shortage in Iowa breeds hunger in South America. Bird flues are born on the winds faster than the flight of birds. Modern medicine conquers age old infirmities and then is baffled by an outbreak of salmonella. A pestilence of flies swarms in the face of pesticides. The more control we think we gain, the more the Lord displays his reach.