A biologist from the North Pole was showing a new recruit the ropes of a polar bear radio tracking program. The new recruit said ""I know how the transmitters work but I have one question--how do you catch the polar bears in the first place?"" ""I bet you use high-powered tranquilizer dart guns right?"" ""Oh no!"" the experienced biologist replied ""we use an ancient Eskimo technique developed centuries ago. First we dig a huge hole in the ice. Next we place a circle of green peas all the way around the hole. Then we go hide behind some ice blocks and wait. Finally when a polar bear comes up to take a pea we kick him in the ice-hole !!!""