A man who lived as a goat in the Alps for three days has won an Ig Nobel prize.
Thomas Thwaites, 35, from London, was awarded the spoof biology prize at the alternative Nobel awards ceremony at Harvard University, after he used specially-made prostheses to live like an animal in the mountains.
Thwaites said he embarked on the project to escape the stresses of city life, but it became a passion.
The designer spent a year researching the idea and asked prosthesis expert Dr Glyn Heath of Salford University to build him a set of goat legs.
"I suffered quite a lot as a goat - because of the slope I was constantly falling over, and of course I had to eat grass," Thwaites told the Daily Mail.
"Also, the goats didn't seem to like me very much - sometimes I thought they were really going to try and attack me. And they have particularly dangerous horns."
Thwaites shared his prize with fellow Briton Charles Foster, who has also spent time in the wild trying to understand life from the perspective of an animal.
The Ig Nobels, which are in their 26th year, are awarded by the US science humour magazine the Annals of Improbable Research.
Other studies awarded at the ceremony include an exploration of the effects of wearing polyester, cotton or wool trousers on the sex life of rats.
German car manufacturer Volkswagen was awarded the chemistry prize for the way it cheated emissions tests.
The real Nobel Prize awards will be announced from October 4.