"In wintertime, the cliff surface gets so cold that its temperature falls below the freezing point of CO2, which at low pressure goes directly to solid, " said Dr Musselwhite.

BBC: Doubts over water on Mars

It has a freezing point well below 32 degrees Fahrenheit or zero Celsius and therefore is able to prevent the precipitation that falls into it from freezing on the plane's surface.

CNN: Airplane deicing: The how and why

If you don't want to cool off to the point of freezing, think Alaska.

CNN: ASIANOW - TIME Asia | Travel Watch | Open the Door to Cool Summer a Escape

Many London Underground lines are delayed after signal point problems caused by the freezing conditions.

BBC: Heavy snow and ice bring travel chaos across UK

But they had the same point of view: Egg freezing gave them options for fitting a family into their work lives and time to meet a future partner.

WSJ: Why I Froze My Eggs (And You Should, Too)

For the most part, when people think of cryonics, people think about long-term cryonics that is, freezing people who are dead so they can be revived at some point in the future, as in the Alcor case studies I mentioned, or the mythical frozen corpse of Walt Disney.

FORBES: The Prospects of Short Term Cryonics