Water

Water

Water is one of the main ingredients to life as we know it, it covers 71 per cent of Earth’s surface and also makes up about 60 per cent of human bodies. It is so essential for life that humans can only live without water for three to four days. Water is a molecule containing two hydrogen and one oxygen atom, its chemical formula is H2O. Water is a liquid at room temperature, ice in its solid state below 0ºC and steam/water vapour in its gaseous state above 100ºC.

What exactly do water filters filter out?

They don’t necessarily remove all contaminants.
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What is Mexico's blue hole?

The world's deepest marine sinkhole is at least 420m deep but remains a mystery to scientists.
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The strange science of how fog forms

Fog occurs when air saturated with water vapour is cooled suddenly, and there are several different ways this can happen.
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Why is the pink lake in Australia pink?

Hint: it’s not a Barbie movie marketing ploy.
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Top 10 longest rivers in the world 2024

Spoiler: the Amazon doesn't take the prize for the globe's lengthiest river.
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Is water actually wet? Scientists aren't sure

We dive into the surprisingly deep scientific debate.
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What is guttation?

The build-up of water inside plants is released via sap through specialist pores in the leaf.
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What is a yeti crab?

This squat lobster can be found hanging out at deep-sea hydrothermal vents and cold seeps.
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What is a fogbow?

This rare weather phenomenon is the rainbow's ghostly cousin.
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What are they and how are they made?

Also called ice stupas, they are an innovative solution to tackling water shortages caused by drought in the summer months, and can help combat the effects of climate change.
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The best water testing kits for safe hydration in 2024

Test your kitchen taps, swimming pools or outdoor wells with our pick of the best water testing kits.
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How does geothermal energy produce electricity?

Geothermal energy is obtained by pumping out hot water or water through hot rocks and back to the surface.
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All you need is love: The Underwater photographer of the Year winners

Winners from this year's prestigious prize includes a cute baby turtle, a terrifying great white shark and a fish swallowing another whole.
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Why hasn’t tidal power taken off yet?

Tidal power has good potential as a renewable energy source but there are currently a few barriers to its growth.
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