probability
Find out how scientists, from physicists to geneticists, measure their confidence in their results. 

What do physicists at CERN mean when they talk about "sigma levels"? 
If you are a flower then April is allegedly the cruellest month, but if you are a student of any sort then I'm sure you would have picked June. 
In the TV game show Two Tribes teams can have unequal sizes. Is that fair? 
The company 23andMe made headlines by launching its DNA testing service in the UK. But how are the risks of developing a disease calculated? 
One thing that makes TV game shows fun to watch is that there's usually an element of luck involved. But how (un)lucky is (un)lucky? We look at the probabilities of two popular examples. 

David Sloan calculates how likely it is that our Universe exists. He explains to us how, and why the answer can help shape our theories of physics. 
A 1 in 14 million chance to win the lottery, a 5% risk of cancer, a 50:50 chance of heads on a coin — we deal with probabilities all the time, but do they actually mean anything? We explore the philosophy of probability and ask whether the probabilities that come up in physics differ from those in every day life. 