Why does my nose drip in cold weather?

Listener Mike asked us to sniff out an answer to cold conundrum... When I cycle my bike in cold weather my nose runs, it doesn't happen in warm weather and is their anything I can do to help with it?We took this snotty situation to Ears nose and throat specialist, Neil Donelly, from Addenbrookes hospital. Like this podcast? Please help us by supporting the Naked Scientists