>> reporter: and yet, aleathia graham knows she's lucky to have it. ellis has a waiting list more than double its enrollment. mark strassmann, cbs news, boston. >> jiang: and still ahead on the "cbsbs weekend news," how te future of recycling in space is being explored in a colorado garage. final frontier for adventure, and possibly high-tech recycling. in tonight's "weekend journal" barry petersen takes a look at some of the groundwork being done to capitalize on the thousands of old orbiting sattelites. >> reporter: here's how it work now: you build things like satellite on earth and spends millions launching them into orbit. but that's about to change. recycling is headed for the stars. dr. angel abbud-madrid is director of the center for space resources at the colorado school of mines. >> now you can use that to create probably parts of sattelites, entire strucucturesn spacace. yoyou can usee it as aa propell. >> repororter: totoday, whenn sattttelites runun out of f fuey become m more space debris, debs that can hit other space objects. in the mo