Members of the Italian army remove a World War Two bomb that was discovered in the dried-up River Po which has been suffering from the worst drought in 70 years, in Borgo Virgilio, Italy, August 7, 2022. REUTERS/Flavio Lo Scalzo 

Members of the Italian army remove a World War Two bomb that was discovered in the dried-up River Po which has been suffering from the worst drought in 70 years, in Borgo Virgilio, Italy, August 7, 2022. REUTERS/Flavio Lo Scalzo 

A view shows parts of the dried-up River Po that has been suffering from the worst drought in 70 years, near Borgo Virgilio, Italy, August 7, 2022. REUTERS/Flavio Lo Scalzo TPX IMAGES OF THE DAY 

Members of the Italian army remove a World War Two bomb that was discovered in the dried-up River Po which has been suffering from the worst drought in 70 years, in Borgo Virgilio, Italy, August 7, 2022. REUTERS/Flavio Lo Scalzo 

Anti-salt barriers designed to minimize the amount of salty seawater flowing into River Po are pictured in Scardovari, Italy June 23, 2022. Picture taken 23, 2022. REUTERS/Guglielmo Mangiapane 

A person sits at a Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Carmagnola near Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Carmagnola near Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows restaurant tables next to Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A woman sits next to Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A woman walks a dog next to Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows restaurant tables next to Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows Po's dry riverbed, as parts of Italy's longest river have dried up due to the worst drought in the last 70 years, in Turin, Italy July 15, 2022. REUTERS/Massimo Pinca 

A view shows Po's dry riverbed, as parts of Italy's longest river and largest reservoir of freshwater have dried up due to the worst drought in the last 70 years, in Malcantone, near Ferrara, Italy June 23, 2022. Picture taken June 23, 2022. Picture taken with a drone. REUTERS/Gabriele Pileri 

Damaged soy plants affected by salty seawater flowing into drought-hit River Po are pictured in Porto Tolle, Italy, June 23, 2022. Picture taken 23, 2022. REUTERS/Guglielmo Mangiapane