In the Dutch city of Deventer, students make up a quarter of the population. But finding an affordable place to live can be a challenge. One nursing home offers students free accommodation in exchange for spending time with its residents.
Schools in Ghana have been hit by a shortage of toilets and pit latrines which could affect the learning process of pupils. It could also lead to the outbreak of disease.
Growing food in space was never going to be easy, but NASA and friends have been studying the problem. They've also been thinking about how to farm Martian soils when man finally reaches the Red Planet.
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