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Planet Earth and Sun. Elements of this image furnished by NASA.

Space

Mysterious origin of Earth's water may be explained by solar wind

Evidence from asteroids shows that charged particles from the sun can turn dust grains into water – a process that could be useful for space exploration too

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road sign

Health

Legal lead levels in US tap water may harm people with kidney disease

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60 per cent of world’s rivers stop flowing for at least one day a year

Environment

60 per cent of world’s rivers stop flowing for at least one day a year

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chicken

Environment

Switching beef for chicken could reduce water footprint of US diets

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Earthquakes in Taiwan are linked to seasonal changes in water levels

Earth

Earthquakes in Taiwan are linked to seasonal changes in water levels

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Vibrations from a smartphone can help us spot unsafe drinking water

Technology

Vibrations from a smartphone can help us spot unsafe drinking water

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crop irrigation

Environment

Carbon-negative crops may mean water shortages for 4.5 billion people

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Parched soil

Environment

Nearly 700 million people could be living in extreme drought by 2100

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Water may be even more crucial to life than we thought

Life

Water may be even more crucial to life than we thought

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Indus basin

Environment

Groundwater that supports world food chain may become too salty to use

The groundwater basins that provide water for much of the world's food production are in danger of becoming too salty due to human activity disrupting the flow of incoming freshwater

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Space

Meteorites may have brought water to Earth in the recent past

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Physics

Armoured liquid marbles connected together in a chain 1.7 metres long

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Environment

Huge reservoir of fresh water found beneath the sea off Hawaii

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Humans

Wealthy US cities struggle to provide running water for all residents

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