How It Works

BRAINDUMP

Does it ever snow in Antarctica?

Kraig Green

Antarctica has an amazing climate. The coldest temperature ever recorded on Earth, -89.2 degrees Celsius, was captured here at the Russian Vostok research station. Such extreme cold brings out some unique and beautiful effects, such as ‘diamond dust’ – a shiny cloud at ground level made up of tiny ice crystals. And yes, it does snow. Antarctica is actually a desert, which means it doesn’t snow very often. When it does, however, the snowstorms can be spectacular and terrifying.

WHY AREN’T FEET MEASURED IN CENTIMETRES OR INCHES?

@LadyLightning

Feet, like any other part of our body, are measured in centimetres. If you’re asking about why shoe sizes are in numbers, there’s an interesting story to this. The standard way to do shoe sizes is to take three times the foot size in inches, and then take away 25, or 12 for kids’ sizes. The reason for this complicated system is because shoes used to be measured not in inches or centimetres, but in an Old English unit called the ‘barleycorn’ that amounts to one-third of an inch.

WHY AREN’T BUTTERFLIES BORN AS BUTTERFLIES?

Jessica Beales

Nature has given butterflies the best adaptations not only for their survival, but also

You’re reading a preview, subscribe to read more.

More from How It Works

How It Works9 min read
Biggest Black Holes In The Universe
Black holes are the most extreme astrophysical phenomena in the universe. And there’s a good chance they’re the best known, too. Not everyone has heard of neutron stars, planetary nebulae or brown dwarfs, but most people have come across the idea of
How It Works9 min read
Braindump
Liquid hydrogen is used as a rocket propellant because it has the highest efficiency relative to the amount used over any other known propellant. In combination with an oxidiser like liquid oxygen, it’s light and extremely powerful, burning at over 3
How It Works1 min read
WELCOME Issue 191
The drone revolution has been simmering for the last decade or so, and has only recently begun to boil over into our everyday lives. Armed forces around the world have been using them for decades, but now unmanned aerial vehicles of all shapes and si

Related Books & Audiobooks