Recently, ecologists at the University of Washington found that willow trees transmit a warning to other willows from as far away as two hundred feet. When caterpillars are attacking, the trees emit a chemical signal that travels with the wind. This enables distant trees to prepare their protection--phenol in the leaves--which is distasteful to the caterpillars. This advance warning of an attack amazes scientists. The individual trees have the ability to behave in a way that benefits not just themselves but the whole species. Are we not a higher form of species than willow trees? Treat other people as you would like to be treated.