From the Beeb: Alien threat to truffle delicacy.

One of the world’s most prized culinary delicacies, the famous Perigord black truffle, could soon be off the menu.

Scientists fear it will be wiped out by an invading Chinese truffle they have discovered growing in European soils.

They tell the New Phytologist journal that the incomer is a particularly aggressive and fast-growing species.

The Perigord black truffle is one of the most highly regarded truffles, fetching around 600 to 800 euros per kg this season. [continue]