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Not enough water in the ground

Only a small amount of the groundwater used by humans can be replenished in the next 50 years, which means that one of the most important resources on planet Earth will become scarce, according...

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Air pollution kills millions each year

Each year 3.3 million people die prematurely from the effects of air pollution worldwide – a figure that could double by 2050 if emissions continue to rise at the current rate. Elke Bunge reports...