Why does my nose run in cold weather?

Thursday 10th March 2011
Submitted by Leahnedahl
GLYN WOGANL, SOUTH WALES

Cold air, especially in windy weather, irritates the eyes. This stimulates your tear glands to produce more tears. The natural drainage point for these tears is through the little hole, called the punctum, in the corner of each eye next to your nose. The puncti drain into the sinuses and trickle down from there to your nostrils. 

GOT A QUESTION?

Scratching your head over a burning scientific conundrum? submit your question and we'll get our esteemed panel of experts to answer it for you.

 

What will happen to the Space Shuttles when they are retired?
previous qanda Article
Is there a pill that protects against HIV infection?
next qanda Article
Q&A Tabs

We do, although you'd barely notice. There are two effects, both due to the spin of the Earth. 'Centrifugal force' due to the spinning lowers your body weight by about 0.4 per cent at the equator...

At the manufacturing stage, when juice from oranges has been extracted and the pulp removed, the product is processed into two forms: not-from-concentrate (NFC) or bulk frozen concentrated orange...

Head hair doesn’t change colour all at once, but many men have grey hair when their eyebrows are still dark. All kinds of body hairs change colour when ageing hair follicles stop producing...

Read any DIY forum online and you’ll find mixed views about whether these actually work. I have one on the pipes to my boiler and I’m not convinced either. Though to be fair, it was...

It's rare to see a dead bird on the ground, but it is also rare to see a dead mouse or rat - which are generally much more numerous. We don't question this because we don't see rodents much when...

All female mammals have a clitoris, the sole purpose of which is to react to sexual stimulation, and presumably this stimulation has evolved to be pleasurable for most species. But establishing...

To create a sound, we have to set matter - whether it's a gas like air, a liquid or even a solid material - in regular motion, creating a wave of specific frequencies, which we hear as a sound of...

Mirrors don’t reverse left and right either – that’s just our interpretation of what happens. Your reflection in the mirror is actually reversed front to back – if you have...

Discovered by an American student named Gary Flandro in the mid-1960s, the slingshot manoeuvre usually involves spacecraft briefly 'coat-tailing' a planet orbiting the Sun, extracting some of the...

The ice disappears because the wind blows away water molecules that have evaporated or 'sublimed' from the ice, so the ice slowly shrinks in size. The molecules that escape are those with the...

We use cookies to improve your experience of our website. Cookies perform functions like recognising you each time you visit and delivering advertising messages that are relevant to you. Read more here