"60 MINUTES" LISTINGS FOR SUNDAY, JULY 1, 2012

STUXNET - The sophisticated computer worm that sabotaged Iran's nuclear program is now out there, its idea and methods exposed to terrorists or rogue nations who could use them to create their own cyberweapon. Steve Kroft reports. Graham Messick is the producer.

QATAR - The tiny and prosperous Middle Eastern country with no income taxes and free health care is an island of calm in a sea of unrest as neighbors like Syria, Egypt and Bahrain experience social upheaval. Bob Simon reports. Harry Radliffe is the producer.

THE MOST EXPENSIVE FOOD IN THE WORLD - European white truffles can sell for as much as $3,600 a pound. But harvests are down and a black market has emerged that has allowed an influx of inferior and cheap Chinese truffles that are diluting this lucrative market. Lesley Stahl reports. Ira Rosen is the producer.