Water point 'bank machines' boost Kenya slums

Around the world people use bank machines to access cash: but in the Kenyan capital's crowded slums, people now use similar machines to access an even more basic requirement—clean water.

Nemo's garden off Italy offers hope for seabed crops

In the homeland of pesto, a group of diving enthusiasts have come up with a way of growing basil beneath the sea that could revolutionise crop production in arid coastal areas around the world.

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