Billions more will need food
By Fred Knapp 
, Senior Reporter/Producer Nebraska Public Media
May 2, 2010, 7 a.m. ·
In the next 40 years, the world's population is expected to increase 50 percent, to 9 billion. Feeding that many people while maintaining the planet will require big changes, says a speaker at the Water for Food conference this week at the University of Nebraska Lincoln.