| ||||||||||||||||||||
| ||||||||||||||||||||
![]() |
| |||||||||||||||||||
home + should we grow them? + engineer a crop + what's for dinner? + viewpoints links + interviews + what about this fish? + discussion synopsis + tapes & transcripts + press + credits frontline + nova + wgbh + pbs online
wheat photograph ©h. david sewell/corbis | ||||||||||||||||||||