Questions to accompany Ancient Earth: Life Rising, PBS NOVA season 50, episode 13. The video is available through PBS, iTunes, and Amazon Prime. At the time of publication, it also streams on YouTube. [YouTube link embedded in episode title on Google Docs files. PBS streaming link provided in “S50E13” of the title line text.] Streaming video links can change over time and may require a search to locate.ANCIENT EARTHWitness the dramatic history of Earth, from its birth to the emergence of humanit