A McDonald's burger and a portion of French fries that have been on display for six months as part of an art project still show no signs of decomposition.
According to the artist, Sally Davies, the Happy Meal looks little different to the day it was bought in New York, with no mould or decay evident.
She says: "The first thing that struck me on day two of the experiment was that it no longer emitted any smell.
"On the second day, my dogs stopped circling the shelf it was sitting on trying to see what was up there."
"Now, at six months old, the food is plastic to the touch and has an acrylic sheen to it."
A McDonald's spokesman dismissed the suggestion that its food was non-biodegradable, saying such claims were "outlandish" and "completely false."
Wolves threaten policeman
A Russian policeman making a routine traffic stop was forced to jump into the back seat of the motorist's car when it was surrounded by a pack of wolves.
The officer was questioning the driver when his colleague in a police vehicle on the other side of the highway shouted a warning and sounded his siren.
Footage from a CCTV camera shows a large pack of snarling wolves running across three lanes of the road and the officer abruptly jumping into the back of the suspect's car and slamming the door in the nick of time.
Gap goes back to basics
Gap, the US-based clothing company, has been forced to abandon an expensive redesign of its logo after protests led by social networking sites.
The decision to replace the iconic blue logo with a new "modern, sexy, cool" design saw a Twitter account gather 5,000 followers and 2,000 comments on Facebook.
The company has since admitted defeat and restored the original design, which was created 20 years ago.
Posts called the new logo "ugly", "bland" and an "utter failure".
DNA linked to Louis XVI
Bloodstains on a carved 18th-century French gourd have been linked to Louis XVI.
DNA samples have been extracted from the gourd, which was originally used to store gunpowder but later contained a handkerchief said to have been dipped in the king's blood after he was sent to the guillotine in 1793. Tests now show that the blood belonged to a blue-eyed man fitting the king's description.
Geneticists now hope to compare the blood with DNA from a living relative of the king. Failing that, they hope to extract a sample from the dried heart of his son, which is kept in a crystal vase in the Cathedral Basilica of St Denis in Paris.
Horse carving might be dog
The White Horse of Uffingham, carved in an English hillside, might actually represent a dog.
A veterinary surgeon, Olaf Swarbrick, says the anatomy of the "beautiful, stylised" animal suggests it is a greyhound or wolfhound. In the current issue of the Veterinary Record, Mr Swarbrick writes: "Looking at it again, it seems that it is not a horse at all: the tail and head are wrong for a horse and more suggestive of a dog. It appears more like a large hound at full stretch."
The White Horse was originally believed to have been carved to mark the victories of King Alfred the Great over the Danes during the 9th century.