If you had stood outside looking up with your mouth open in the UK's worst snowstorm in the past 10 years, how long would it taken for the snow to fill your mouth with 200ml of water?

Would it have been more energy efficient to keep yourself warm all that time or to transport that 200ml of water to a tap in the area that the snowstorm happened?

When scientists say no snowflake is the same as another and they are all different how did they find this out? What makes them think out of the trillions and trillions of snowflakes that have fallen two aren't the same and how have they proved this?

I saw the delicate, leaf-like ice crystals in the photo whilst snowboarding in France, they measured from 20 - 80mm and were incredibly fragile. The area they covered in the photo was about 20m2 but we saw other patches close by. The site was at about 1800m.

I have heard the oft-repeated "fact" that no two snowflakes are ever the same. Having a fair idea of how snowflakes form, (those Last Word books are very educational), I can see how this might be true. But it's still possible for two snowflakes to be clones. What's the probability of two different snowflakes forming the same, and looking exactly the same. And, if a estimation of how much snow has ever snowed is possible, can it be worked out how many snowflake clones there has ever been?