Curiosities for when your ass is freezing!

This is a post on curiosities about "cold", it can include the fact that cold weather doesn't directly cause illness; it's a virus, not a temperature, that makes you sick. Be warned, anyway, other kinds of curiosities come to:

The Absolute Cold
It may sound like science fiction but there is a scientific measurement for the coldest it can ever be. 0 degrees on the kelvin scale (-273.15 C) is the coldest matter can ever get. At that point it’s so cold even your atoms fall apart.

The Coldest On Earth
Last year, on December 10th the coldest temperature ever recorded on Earth took place. On a high ridge in Antarctica the temperature reached -92 Cº.

The Mpemba effect
Hot water can freeze faster than cold water due to evaporation reducing the volume of the hot water.

Fruit enhancement
Cold temperatures can actually make some fruits, such as citrus and grapes, sweeter.

Why We Shiver
Shivering is an involuntary action your body makes in response to cold temperatures. By shivering, your body is able to warm up more than if you were standing still–in fact, shivering can increase your body’s warmth as much as three times the normal rate!

Frozen Feet
This is another way that your body reserves heat. When you’re feeling cold, your body registers that it needs to take precautions. The blood vessels in your hands and feet contract when it’s cold out–this sends less blood to those areas so that your body can pump more blood (and keep warmth circulating) through your core.

Why can your teeth hurt in freezing temperatures?
Our teeth can cope with temperatures of more than 1,000 degrees Celsius, thanks to a very hard surface layer called enamel that protects them. But sometimes cold weather can hurt our teeth, and that's because teeth expand or shrink depending on the temperature. These changes can form small cracks in your enamel, exposing the more sensitive part of your teeth where your nerves are. It's at this point your teeth can hurt when they come into contact with very cold or very hot things.

Zero graus celsius is when our tongue will stick to a metal pole.
The conductivity of the metal pole draws the heat from our tongue causing it to freeze to the pole.

Hypothermia can be deadly just minutes after falling into icy water is a lie
The truth is that panic, and drowning that can result from it, is the main cause of quick deaths from falling into deeply cold water. According to the world's leading hypothermia researcher, PhD Gordon Giesbrecht of the University of Manitoba, hypothermia caused by icy water only becomes dangerous after about 30 minutes. The advice from Giesbrecht, is to take the first minute after falling into extremely cold water to calm yourself, and the next 10 minutes to find a way out of the water.