Science Friday Published by Science Friday Hr1: News Roundup, Chimeras, Astrobiology Listen 47 min Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/735023/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend New advances in stem cell research will one day make it possible to grow human transplant organs in animal hosts. And astrobiologists are looking at unusual environments on Earth for clues on how to search for life elsewhere in the solar system.