Posted in logarithms.

(Photo courtesy of UN Development Program.) We've had a lot of noticeable earthquakes around the world in the last year or so - Haiti, Chile, New Zealand. Probably no more than usual, except that we notice them more - but that's a topic for another day. Instead, we're going to

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Posted in ranting.

Here, let me get on this soapbox a moment Things that irritate me beyond end, number two in a series of, well, lots: grumbles about how "oh, it's pointless teaching maths, you only ever use it to work out discounts in the supermarket and there are calculators on your phone

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Posted in algebra, geek pride, prime numbers.

If you follow the great big geeks on twitter - and , I'm looking at you - you'll have seen bits and pieces of discussion about prime birthdays. How to find your next prime birthday It's your prime birthday if you've been alive for a number of days that happens

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