Don't Panic! Lighten Up!
The study, published today online in the journal Nature Chemical Biology, shows the yeast can detect, or smell, airborne particles from explosives.
The scientists engineered the yeast Saccharomyces cerevisiae to sense molecules of the chemical DNT, or dinitrotoluene.
DNT is left over after making the explosive TNT, or trinitroluene. And dogs trained to sniff for explosives are believed in fact to be trained to detect DNT.
A court in the south-western state of Rhineland-Palatinate rejected an appeal by a man to have the costs of his hairpiece paid for by a statutory health insurer, saying the problem was not unusual enough among men to justify his claim.
The man had based his appeal on the grounds he had been bald since childhood, but the insurer told him it only provided "long-term hair replacement support" for women and minors.
Shenyang botanical park is charging 30p each for pictures with the animal which, as well as painted black stripes, has fluffy white hair.
When asked if the zebra is real, the feeder answered: "It's from Africa. What do you call it, if it's not a zebra?"
"We saw right away that the zebra is fake, but we are here for fun, so it doesn't really matter," said a mother who had just paid for her child's picture.
The balloon, a self-portrait by Pawel Althamer, a Polish artist, has been hovering outside the Palazzina Appiani in Parco Sempione since Monday, drawing second takes, amused looks and some reprobation about exposing children to nudity.
"To be honest with you, it's nothing new," said Rosaria Mirabelli, the mother of three-year-old Tommaso, who stared at the sculpture from the back of his mother's bicycle. "He sees his father naked. In this park we see so many worse things than a naked man," she added, referring to the park's reputation as a haven for drug users.
The chick, named Celia, hatched three weeks after Miles Orford, of Great Ashfield, placed six free-range Cotswold Legbar eggs in an incubator.
His mother, Sarah Orford, said: "We've tried the same experiment with quail and duck eggs.
"None of the quail eggs hatched. We're still waiting to see what happens with the duck eggs."
The 'Masked Defenders' - Marc-Antoine Audette and Sebastien Trudel - called Mr Sarkozy pretending to be Canada's Prime Minister Stephen Harper.
The caller apologised for his poor French skills and invited Mr Sarkozy to visit Canada to eat a popular Quebec dish of fries, cheese curds and gravy.