It is 40 years since the beginning of a Senate investigation which would eventually lead to Richard Nixon standing down as President of the USA. Senator Howard Baker was on the Watergate committee.

(Photo: Senator Howard Baker (left), Senator Sam Irvin, Sam Dash, Senator Herman Talmadge. Credit: Gene Forte/Getty Images.)

It is 35 years since the Italian Prime Minister was found dead in a car in Rome. He had been kidnapped by the Red Brigade, left-wing extremists, two months earlier.

(Image: Aldo Moro in captivity. Credit: Getty Images)

In May 1980 the British government published a booklet about how to survive nuclear war. The booklet, Protect and Survive, provoked public incredulity as well as fear. Anti-nuclear groups in the UK saw a surge in their membership.

(Image: Protect and Survive booklet)

In 1943, the Royal Air Force attacked a set of dams in Germany's Ruhr valley which were considered indestructible. Flying low and at night, the crews used special bouncing bombs to bring down two of their targets. The Dambusters mission was a huge propaganda success for Britain and later inspired a famous film.

Simon Watts talks to Johnny Johnson, one of the few survivors of the raid.

PHOTO: Johnny Johnson (far left) with the rest of 617 squadron (DAMBUSTERS) at RAF Scampton, Lincolnshire, 22 JULY 1943 (Imperial War Museum).

It is 21 years since the funeral of screen star Marlene Dietrich, who died in Paris at the age of 90. Her grandson Peter Riva remembers the woman behind the legend.

(Image: Marlene Dietrich)

The story of a journalist who was caught up in an attempt to overthrow Ethiopia's Soviet backed ruler, Col. Mengistu Haile Mariam in 1989.

(Photo: Mengistu Haile Mariam in Ethiopia. AP Photo)

As rebellion swept across Europe, Polish demonstrators called for changes to the communist system. But the authorities in Warsaw didn't listen. Eugeniusz Smolar was a student leader at the time.

Photo: Genic (far right) and friends in discussion at a student meeting.

A new film of the great American novel premieres at the Cannes film festival this week. Hear from two people with close links to its author F Scott Fitzgerald.

(Image: F.Scott Fitzgerald. Credit: Associated Press)

The story of Jack Humble, whose ship was torpedoed while escorting a convoy inside the Arctic Circle. From 1941-45, Allied sailors and ships battled storms, bombers and U-boats to ferry war supplies to Russia in WW2.

(Photo: Frozen deck of a British warship on Arctic Convoy, Feb 1943. Credit: AP)

It is 60 years since one of England's footballing legends - Sir Stanley Matthews - led his team to FA Cup victory. Hear the story of that Blackpool versus Bolton final, and memories of the man himself.

(Photo: Stanley Matthews (2nd left) and members of the winning Blackpool team. Credit: PA)