Everyone forgets things sometimes.
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Have you ever walked into a room and realised you can’t remember what you were looking for? We tend to do this more when we are thinking of a few things at once or doing two things at the same time.
The air up high is just really bad at ‘holding’ onto the radiation coming from the Sun, and the warmth passes straight through it on its journey toward the ground.
Kevin Spencer/flicr
It helps if you imagine the ground here on Earth as a big heater. It keeps us warm, and if you move away from the heater you feel cold.
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You could jump much higher on the moon than you can on Earth – but you’d be in no danger of shooting off into space.
Cori Gauff smashes through first two rounds at Wimbledon.
Andy Rain/EPA.
A young athlete’s support network is key to their development and performance, according to sports psychologists.
What a good boy.
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Having different coloured eyes is quite unusual, but it happens in many species throughout the animal kingdom.
Emperor penguins have uniquely adapted to their Antarctic home.
Christopher Michel/flickr
Emperor penguins have a few hidden tricks to stay warm, like blood vessels in the nose arranged so they can regain most of the heat that would be lost by breathing.
Slang: sometimes difficult to decipher.
Thomas Hawk/Flickr.
The relationship between street slang used by young people and secret codes deployed by gang members is not always straightforward.
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New research looked closely at the lives of thousands of 14 year olds to discover that fewer are having oral sex and intercourse than previous generations.
Doubly bendy.
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Being double jointed doesn’t mean you have an extra joint – an expert in biomechanics explains what makes some people doubly bendy.
Very beautiful, and useful too.
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An expert explains all the wonderful ways the atmosphere protects life on Earth.
Rocks contain a layer-by-layer record of the history of our planet.
Fred Moore/flickr
As strange as it sounds, rocks are made from stardust.
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A scientist explains how global warming is affecting the entire world – from the mountains, to the sea.
Alas, poor all of us.
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An expert responds to a teenager who wants to know – is there any hope for humanity’s future?
Gravity helps stars to form.
UNIMAP / L. Piazzo, La Sapienza – Università di Roma; E. Schisano / G. Li Causi, IAPS/INAF, Italy
Gravity exists because the universe is full of ‘stuff’ – here’s how it came to be.
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Gentrification happens when attempts to build bridges between disenfranchised people and their better-off peers go awry – but it doesn’t have to be this way.
Flying high.
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It’s hard to believe, but big storms and hurricanes are caused by tiny particles moving around in the atmosphere.
Can’t spot the problem?
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Research into attitudes reveals some startling findings.
Web of flies.
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Spiders use different types of silk for different purposes – and not all of them are as strong as steel.
I spy with my little eye…
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Pets, like guinea pigs, lead very different lives to humans – and that’s why they need very different eyes, too.
The good type of tickles.
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Tickling is an important sign that someone – or something – is touching you. An expert explains how it works.