22 August

Bruno Pontecorvo - nuclear physicist

Defection to Soviet Union sparked unsolved mystery 

Bruno Pontecorvo, a nuclear physicist whose defection to the Soviet Union in 1950 led to suspicions of espionage after he had worked on research programmes in the United States, Canada, and the United Kingdom, was born on this day in 1913 in Marina di Pisa.  One of eight children born to Massimo Pontecorvo - a Jewish textile manufacturer who owned three factories - Bruno was from a family rich in intellectual talent. One of his brothers was the film director Gillo Pontecorvo, another the geneticist Guido Pontecorvo.  Bruno studied engineering at the University of Pisa but after two years switched to physics. He received a doctorate to study at the University of Rome La Sapienza, where Enrico Fermi had gathered together a group of promising young scientists, dubbed “the Via Panisperna boys” after the street where the Institute of Physics was then situated.  Read more…

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Flavius Stilicho - Roman general

Last defender of the Western Empire

The military commander Flavius Stilicho, who for part of his career could be considered the most powerful man and de facto ruler of the Western Roman Empire, was executed on this day in 408 in Ravenna.  Stilicho had successfully defended the empire against several barbarian invasions and gained his power through acting as regent when the death of Theodosius I in 395 left the Western Empire in the hands of Honorius, his 10-year-old son.  But as a soldier of partly Vandal descent, Stilicho had always aroused suspicion within the Roman court and his failure to deal with the advance across northern Europe of the rebellious Constantine III, leader of the Romans in Britain, combined with rumours that he planned to install his own son, Eucherius, as emperor of the Eastern Empire following the death of Arcadius, sparked a mutiny of the Roman army at Ticinum. Read more…

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Giada De Laurentiis - TV chef

Food Network star who was born in Rome

The TV presenter, chef, author and restaurateur Giada Pamela De Laurentiis was born in Rome on this day in 1970.  A classically-trained chef who learned her craft in Paris, she worked in the kitchens of a number of restaurants in Los Angeles before breaking into television. Since 2003 she has been a regular on the Food Network, the American cable channel.  Born into a theatre and movie background, De Laurentiis takes her name from her mother, the actress Veronica De Laurentiis, whose parents were the producer Dino De Laurentiis and the actress Silvana Mangano.  Her father is the actor-producer Alex De Benedetti.  Giada spent her first seven years in Rome, where her mother still has a home near the Spanish Steps, but after her parents divorced she and her sisters moved to Los Angeles.  Her grandfather had a home in Hollywood. Read more…

History’s first air raid

Balloon bombs dropped on Venice

Venice suffered the first successful air raid in the history of warfare on this day in 1849.  It came six months after Austria had defeated the Kingdom of Piedmont-Sardinia in the First Italian War of Independence as the Austrians sought to regain control of Venice, where the revolutionary leader Daniele Manin had established the Republic of San Marco.  The city, over which Manin’s supporters had seized control in March 1848, was under siege by the Austrians, whose victory over the Piedmontese army in March 1849 had enabled them to concentrate more resources on defeating the Venetians.  They had regained much of the mainland territory of Manin’s republic towards the end of 1848 and were now closing in on the city itself, having decided that cutting off resources while periodically bombarding the city from the sea would bring Venice’s capitulation.  Read more…

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Giacomo Radini-Tedeschi – bishop

Progressive priest who shaped the destiny of a future Pope

Giacomo Radini-Tedeschi, Bishop of Bergamo, who was a mentor for the future Pope John XXIII, died on this day in 1914 in Bergamo.  He was Bishop of the Diocese of Bergamo from 1905 until his death and is remembered with respect because of his strong involvement in social issues at the beginning of the 20th century when he sought to understand the problems of working class Italians.  Radini-Tedeschi was born in 1857 into a wealthy, noble family living in Piacenza in Emilia-Romagna.  He was ordained as a priest in 1879 and then became professor of Church Law in the seminary of Piacenza.  In 1890 he joined the Secretariat of State of the Holy See and was sent on a number of diplomatic missions.  In 1905 he was named Bishop of the Roman Catholic Diocese of Bergamo by Pope Pius X and was consecrated by him in the Sistine Chapel.  Read more…

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Luca Marenzio – composer

Madrigal writer influenced Monteverdi

Luca Marenzio, a prolific composer of madrigals during the late Renaissance period, died on this day in 1599 in the garden of the Villa Medici on Monte Pincio in Rome.  Marenzio wrote at least 500 madrigals, some of which are considered to be the most famous examples of the form, and he was an important influence on the composer Claudio Monteverdi.  Born at Coccaglio, a small town near Brescia in 1553, Marenzio was one of seven children belonging to a poor family, but he received some early musical training at Brescia Cathedral where he was a choirboy.  It is believed he went to Mantua with the maestro di cappella from Brescia to serve the Gonzaga family as a singer.  Marenzio was then employed as a singer in Rome by Cardinal Cristoforo Madruzzo and, after the Cardinal’s death, he served at the court of Cardinal Luigi d’Este.  He travelled to Ferrara with Luigi d’Este and took part in the wedding festivities for Vincenzo Gonzaga and Margherita Farnese.  While he was there he wrote two books of madrigals and dedicated them to Alfonso II and Lucrezia d’Este.  Read more…

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Book of the Day: The Pontecorvo Affair - A Cold War Defection and Nuclear Physics, by Simone Turchetti 

In the autumn of 1950, newspapers around the world reported that the Italian-born nuclear physicist Bruno Pontecorvo and his family had mysteriously disappeared while returning to Britain from a holiday trip. Pontecorvo was known to be an expert working for the UK Atomic Energy Research Establishment so his disappearance raised concern for the safety of atomic secrets, especially when it became known in the following months that he had defected to the Soviet Union. Was Pontecorvo a spy? Did he know and pass sensitive information about the bomb to Soviet experts? At the time, nuclear scientists, security personnel, Western government officials, and journalists assessed the case, but their efforts were inconclusive. In the years since, some have downplayed Pontecorvo's knowledge of atomic weaponry, while others have claimed him as part of a spy ring that infiltrated the Manhattan Project. The Pontecorvo Affair draws from newly-disclosed sources to challenge previous attempts to solve the case, offering a balanced and well-documented account of Pontecorvo, his activities, and his possible motivations for defecting. 

Simone Turchetti is an independent research fellow at the Centre for the History of Science, Technology, and Medicine at the University of Manchester.

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