If grandparents paying for potential grandchildren to be put on ice sounds a little strange, how about the emerging legal field of trust and estate rights for frozen embryos, eggs, and other, well biological material? When word of mouth senior producer Rebecca Lavoie read a Bloomberg Business Week article about a Manhattan lawyer representing frozen embryos in trust cases, she went right to the source to find out more. That lawyer, as it turns out, was her brother in law, KMZ Rosenman co-managing partner Joshua Rubenstein. She took him for a walk in New York’s central park, pulled out her recorder, and asked when frozen embryos first hit his radar as potential clients.