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New research shows that there are commonalities across the world's more than 6,000 languages, between the sounds in particular words and the meanings of those words. Morten Christiansen discusses the research.

Digital Life
Digital Life is an ambitious project that aims to create 3D models of all the creatures on earth. Gareth Mitchell talks to Professor Duncan Irschick and Christine Shepard.

Animal Computer Interaction
Marnie Chesterton meets researchers at a UK lab which studies the way animals interact with computer technology, including that which enables dogs to contact services in an emergency.

Horus
Horus is a new wearable device that helps blind people navigate – providing an audio commentary about people and objects; and reads texts and street signs. Saverio Murgia demonstrates the technology.

The City that Fell into the Earth
How do you move a city? Lesley Riddoch travels to Arctic Sweden to find out. Kiruna is gradually sliding into Europe's biggest iron ore mine. The city has to be rebuilt two miles away.

The Psychology of Rest
Claudia Hammond discusses how we rest as part of Hubbub – a group including poets, historians and neuroscientists examining the topic of Rest at the Wellcome Collection.

(Photo caption: A sign decorated with the greeting 'Hello' in various languages © Indranil Mukherjee/AFP/Getty Images)

The Science Hour was presented by Gareth Mitchell with comments from ³ÉÈË¿ìÊÖ News science reporter Victoria Gill

Producer: Colin Grant

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