If you feel your life is lacking a little in pointless anxiety this festive season, here's a fun online tool that lets you find out how much damage would occur if a nuclear bomb exploded in your neighbourhood.
NUKEMAP was created by Alex Wellerstein, a historian of science at the Stevens Institute of Technology.It's been around for a few years, but has gone viral in recent days after appearing in the Data Is Beautiful section of Reddit.
Simply type in the name of the city you want to virtually nuke, and select the size of explosion, from a 20 kiloton 'Davy Crockett' (the smallest nuclear weapon produced by the US) to the terrifying 100 megaton "Tsar Bomba".
The map then displays colour-coded circles indicating fireball radius, radiation radius, air blast radius and thermal radiation radius.
Here are the likely effects of a Chinese Dong Feng-5 ICBM exploding over central London:
Here's the same weapon over Manchester:
And here's how Scotland would look in the event of Russia detonating one of their Tsar Bomba's over HMNB Clyde, home of Britain's nuclear submarines:
Explaining the thinking behind the project, Mr Wellerstein writes: "We live in a world where nuclear weapons issues are on the front pages of our newspapers on a regular basis, yet most people still have a very bad sense of what an exploding nuclear weapon can actually do.
"Some people think they destroy everything in the world all that once, some people think they are not very different from conventional bombs. The reality is somewhere in between: nuclear weapons can cause immense destruction and huge losses of life, but the effects are still comprehendible on a human scale. "The NUKEMAP is aimed at helping people visualize nuclear weapons on terms they can make sense of — helping them to get a sense of the scale of the bombs.
"By allowing people to use arbitrarily picked geographical locations, I hope that people will come to understand what a nuclear weapon would do to places they are familiar with, and how the different sizes of nuclear weapons change the results."
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