At first glance, water seems like one of Earth’s most renewable resources. It falls from the sky when it rains, it surrounds us in oceans, it’s inside glaciers and icebergs and it covers a staggering 70 per cent of the world’s surface.
However, there’s a problem. Around 97.5 per cent of seawater is unfit for human consumption, and with populations and temperatures rising around the world the freshwater reserves that we do have are under severe pressure.
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