Mars mission
The current episode of the ETH Podcast is about a researcher who wants to develop an ecosystem for astronauts on a space station or inhabitants of a Mars base.
![Grace Dent im Podcast](/en/news-and-events/eth-news/news/2019/06/mars-mission/_jcr_content/news_content/fullwidthimage/image.imageformat.930.1754746693.jpg)
ETH researcher Grace Crain thinks on a galactic scale. She is hoping to develop an ecosystem that could provide food, drinking water and clean air to astronauts on a space station or to the inhabitants of a Moon or Mars base. In this ETH podcast, she explains why she chooses to use human urine and faeces to fertilise her plants.