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.
17 absolutely mind-blowing Underwater Photographer of the Year winners 2024
Come and dive down with us as we take a look at the best photos taken beneath the waves.
Top 10 longest rivers in the world 2024
Spoiler: the Amazon doesn't take the prize for the globe's lengthiest river.
Is water actually wet? Scientists aren't sure
We dive into the surprisingly deep scientific debate.
What is guttation?
The build-up of water inside plants is released via sap through specialist pores in the leaf.
Meet the Amazon river dolphin: pink, piranha-eating, melon-headed cetaceans living in South America's longest waterway
Get ready to explore the vibrant world of these underwater divas with some amazing facts about the pink river dolphin.
What gives clouds their shape?
Why are some clouds puffy and other clouds wispy?
What is the best way to dry clothes indoors?
The ideal way to dry wet laundry is to hang it outside on a warm, sunny day, but that’s not always possible.
What is freezer burn, and should you still eat the food?
When your food goes from frozen to fossilised. Should you risk it?
Where were my body's atoms a million years ago?
Travel back in time and discover the surprising origin story of the atoms that make up your body - a million years in the making.
How is fog formed?
Fog occurs when air saturated with water vapour is cooled suddenly, and there are several different ways this can happen.
What’s the difference between wave energy and tidal energy?
Scientists and engineers are developing ways to capture these renewable resources.
What is a yeti crab?
This squat lobster can be found hanging out at deep-sea hydrothermal vents and cold seeps.
What is a fogbow?
This rare weather phenomenon is the rainbow's ghostly cousin.
Artificial glaciers | 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.
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.
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.
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.
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.
Does all life need water?
When we look for extra-terrestrial life, we look for planets with liquid water. But are we overlooking places where life could thrive?
The unseen stunning side of UK sea life, as told in 11 photos
The best photography from UK shores, courtesy of the Marine Conservation Society and some very talented UK photographers.
Why does ice float on water?
Normally, solids are more dense than liquids - so why is ice the exception?
Seven surprising things about ice that we learnt from science comedians Matt Parker, Helen Arney and Steve Mould
In a recent episode of the Science Focus Podcast, the Spoken Nerds went deep into the nitty-gritty all about ice.
Matt Parker, Helen Arney and Steve Mould | What links coffee, snowflakes and frogs?
We speak to the ‘three spoken nerds’ about science comedy, the incredible facts of ice, and their new Podcast of Unnecessary Detail.
Why do ice cubes crack when you put them in water?
Asked by: Katie W, St Albans