Experimental research that examined the effects of flying the black rhinoceros upside down has been awarded the Ig Nobel Prize for transportation.
During a colourful award ceremony, scientists from across the globe were celebrated for accomplishments that make people laugh at first, but then think.
An author of the winning research, Cornell University's Robin Radcliffe, said the veterinarians who designed the rhinoceros experiment had thought "outside the box".
With rhinos often living in remote locations, animal translocation in Namibia had increasingly been reliant on helicopter transport.
What the researchers concluded after studying 12 individuals is that it is actually less stressful for the animals to be carried upside down once tranquillised, rather than leaving them to recline on their side.
“You have to be a genius and creative and sometimes even a little bit crazy to move rhinos this way,” Mr Radcliffe said upon receiving his award.
What you may not know about black rhinoceros
They are the smallest of Africa's two endemic rhinoceros species
Hunting between 1960 and 1995 drove their populations down by 98 per cent
Today, numbers are increasing, but they are still listed as critically endangered
In 2014, a US hunter paid US $350,000 to shoot a black rhinoceros in Namibia
Wild and wonderful winners honoured with prizes
While usually held at Harvard University and presented by genuine Nobel laureates, this year the Ig Nobel Prize went virtual for a second year running due to the coronavirus pandemic.
The biology prize was awarded to Sweden’s Susanne Schotz for her work at Lund University to better understand modes of communication between cats and humans.
On receiving her paper certificate and satirical Zimbabwean $10 trillion note, Ms Schotz, who was wearing a colourful top and cat ears, said she was "speechless".
Her research examined a long list of sounds including purring, chirping, yowling, howling and growling made by four domestic cats.
A study into the bacteria found in discarded chewing gum on pavements across various countries took out the ecology category, while the economics prize went to research that found a correlation between obesity and corruption in politics.
Ig Nobel Prize winners at a glance
Biology - Human and cat communication
Chemistry - How audiences broadcast chemicals as they respond emotionally to films
Economics - Link between obesity and corruption in politics
Medicine - The power of orgasms to improve nasal breathing
Peace - Whether humans evolved beards to absorb the energy of punches to the face
Biology - Understanding the bacteria in discarded chewing gum
Transportation - Improving rhinoceros transportation
Physics - Why pedestrians don't collide with each other
Kinetics - Why pedestrians do collide with each other
Entomology - Controlling cockroaches on submarines
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