What happens if we run out of clean drinking water on Earth? Could we go to outer space to find some? Is there even water in space? In the sixth episode of the Water Series, we explore these and other questions together with a faculty member of the International Space University Juan de Dalmau and space engineer Tommaso Tonina. We also learn that water could be used as rocket fuel, and that, despite the impressive developments in the space sector, we just might have to look after the water that we have on Earth.