their two-year-old. >> reporter: at ellis, two-third of the kids have subsidized tuition base. without that help, lindsey graham's healthcare for three-year-old aryelle would cost more than her rent. >> when you're putting that much money into daycare, what am i going to have saved up? how am i going to afford a house one day? >> 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.