Gravity technology II

This at arXiv is interesting as I will have to understand what they are looking for. It seems to me that they are looking for soldiers with corduroy pants invading the city. I can't say for sure since I have not looked at the science, but it appears they are looking for the equivelant of light waves in gravity which is a totally different animal. I wish I had the time to look at all the interesting things I encounter, but I guess I am frivolous. Kill your lawn seems a good idea referenced at Boing Boing.