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The problem with combining R ratios

We explore why you need to be extremely careful when combining the reproduction ratios of a disease in different settings, such as hospitals and the community.
Article

How can maths fight a pandemic?

How do mathematical models of COVID-19 work and should we believe them? We talk to an epidemiologist, who has been working flat out to inform the government, to find out more.
Article

The power of ants

Find out how these humble animals have inspired computer algorithms to solve complex real-world problems.
Article

Synchronised swimming

How do green algae manage a perfect breaststroke even though they haven't got a brain? Enter the maths of synchronisation.
Article

Blockchain: Spreading trust

Bitcoin is a digital currency that isn't regulated by any kind of central authority. The structure which allows this decentralisation is called blockchain. But how, and how well, does it work?