Agricultural robots are on the way, according to a recent press release from The University of Illinois at Urbana-Champaign. UICU agricultural engineer Tony Grift has been working on several farm robots including a tiny, $150 legged robot called the Ag Ant, designed to walk through crops looking for weeds. Grift and other researchers have also developed larger robots to test navigation and sensor technology in cornfields. Even stranger ideas are in the works, like a robot that could spit chemicals on plants like an ink-jet, preventing wasted chemicals typical of current crop spraying methods. Photos of some of Grift's farm robots can be found on Gizmodo and in Roland Piquepaille's blog. Grift has also advocated the use of Lego Mindstorm robots as an educational tool for agricultural students.