Olive oil, risotto rice and pasta under threat as northern Italy suffers its worst drought in 70 years

Ancient Roman ruins found in the Tiber River date nearly 2,000 years, and are normally covered with water.  But recently, they can be seen by the naked eye due to a heatwave that has been scorching Italy—bringing what experts are calling Italy's worst drought in seven decades. 

Professor of Urban Planning Tom Rankin at La Sapienza in Rome showed CBS News' Chris Livesay where the water from the Tiber River should be. 

"The water normally is up to our waist or shoulder height at this point and now I'd say it's gone beyond a wakeup call," he said.