Italy's white truffle hunters worry about climate change

ALBA, Italy - Rising global temperatures are worrying truffle hunters around the Italian town of Alba, where the most prized specimens can fetch twice the price of gold.

During a particularly warm October, eight out of 10 white truffles unearthed by Carlo Olivero with his trusty 3-year-old dog Steel were dark, withered and dried out.

"They are clearly signs of the temperatures," Olivero said, holding one truffle that he kept in his pocket from last month's foraging. The rest he consigned to the soil, allowing the spores to spread and hopefully replenish future production.