Author: Marianne Freiberger
There are many ways of saying the same thing — you can use many words, or few. Perhaps information should be measured in terms of the shortest way of expressing it? In the 1960s this idea led to a measure of information called Kolmogorov complexity. 
Kolmogorov complexity gives a high value to strings of symbols that are essentially random. But isn't randomness essentially meaningless? Should a measure of information assign a low value to it? The concept of sophistication addresses this question. 
Two mathematicians' visit to the desert sheds new light on avalanches. 

The London Mathematical Society starts its 150th anniversary year with a bang. 
Play with our applets to explore the conic sections and their different definitions. 
A Klein bottle can't hold any liquid because it doesn't have an inside. How do you construct this strange thing and why would you want to? 
The company 23andMe made headlines by launching its DNA testing service in the UK. But how are the risks of developing a disease calculated? 
A little trig helps to find the relative distance to the Sun and Moon. 
Here is our review of the film portraying mathematician and code breaker Alan Turing. 