Danielle Wood speaks on the December 17 episode of the NOVA Now Podcast from PBS, in which they explore satellites, their past, their present and their future.  From the PBS science series NOVA, the NOVA Now podcast is a biweekly podcast digging into the science behind the headlines. Alok Patel takes listeners behind the scenes with the people—scientists, engineers, technologists, mathematicians and more—working to understand our world. Listen to the episode here, "How the future of satellites might affect life on Earth."