This episode discusses a paper with far reaching implications.  This paper's authors came to the conclusion that by utilizing renewable energy and microcontrollers they could essentially make an "Immortal Machine",  This episode dives deep into how an "Immortal Machine" can be made possible and what this could mean for machines in the future.  

Link to obtain access to the paper: https://www.sciencedirect.com/science/article/abs/pii/S2211285520302561?via%3Dihub