Around 200 reindeer have been found dead from starvation 1,200 kilometres from the North Pole.
This phenomenon is not new, but it could be intensified by the record temperatures this summer.
North American defence agency that monitors North Korean missiles also tracks Santa Claus' delivery route
As it has done every year since 1955, a Canadian and American defence agency is tracking Santa Claus' path around the globe in his reindeer-powered sleigh.
If Santa is recruiting helpers to haul Christmas presents around the world this year he had better take a few extra, said researchers Monday who warned that reindeer are shrinking.
The annual prizes, meant to entertain and encourage global research and innovation, are awarded by the Annals of Improbable Research as a whimsical counterpart to the Nobel Prizes