Plus Advent Calendar Door #1: Ice Ice Baby

Oh the weather outside is frightful,
But the fire is so delightful,
And since we've no place to go,
Let It Snow! Let It Snow! Let It Snow!

How seasonal! The first day of our Plus Advent Calendar and the country is blanketed by snow! Admittedly the Plus team also has a broken boiler and children home due to school closure, but we do love the snow!

So to celebrate the frosty beginning of December, we have hidden all things icy behind Door #1. Wrap up warm, pack a thermos of hot tea and strap on your skis and enjoy!


A molecule's eye view of water
Water is essential for life on Earth, and it is a resource we all take for granted. Yet it has many surprising properties that have baffled scientists for centuries. Seemingly simple ideas such as how water freezes are not understood because of water's unique properties. Now scientists are utilising increased computer power and novel algorithms to accurately simulate the properties of water on the nanoscale, allowing complex structures of hundreds or thousands of molecules to be seen and understood.


Maths and climate change: the melting Arctic
The Arctic ice cap is melting fast and the consequences are grim. Mathematical modelling is key to predicting how much longer the ice will be around and assessing the impact of an ice free Arctic on the rest of the planet. Plus spoke to Peter Wadhams from the Polar Ocean Physics Group at the University of Cambridge to get a glimpse of the group's work.


Teacher package: On thin ice - maths and climate change in the Arctic
On the 1st of March 2009 three intrepid polar explorers, Pen Hadow, Ann Daniels and Martin Hartley, set out on foot on a gruelling trip across the Arctic ice cap to conduct the Catlin Arctic Survey. In this teacher package we look at some of the maths and science behind their expedition — climate and sea ice models, GPS and cartography, and how to present statistical evidence.

You can also read more about the expedition in the news stories On thin ice and Further evidence for Arctic meltdown.


Career interview: Avalanche researcher
Jim McElwaine tells Plus how he combines his two loves - mathematics and mountaineering - in avalanche research.


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