On the International Space Station many of the Earth’s environmental support systems have already been engineered. Examining how some of these key technologies work, allows us to understand the vital ingredients that make Earth such an ideal place to live. In the video 'Ingredients for Life: On Earth and in Space', from ESA, aimed primarily at 16-18 year old students, we explore how ESA is dealing with these scientific and technological challenges, and we answer questions like: Why do we need water and oxygen? How do astronauts get the oxygen they need to survive in space?

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