In May 1984 Sakharov's wife, Yelena Bonner, was detained and Sakharov began a hunger strike, demanding permission for his wife to travel to the United States for heart surgery.

As aircraft began to travel faster, aerodynamicists realized that the density of air began to change as it came into contact with an object, leading to a division of fluid flow into the incompressible and compressible regimes.

Between 1790 and 1840, Cambridge began to grow rapidly, with the construction of the West Boston Bridge in 1792, that connected Cambridge directly to Boston, making it no longer necessary to travel eight miles ( 13 km ) through the Boston Neck, Roxbury, and Brookline to cross the Charles River.

During this time period, Marker began to travel around the world as a journalist and photographer, a vocation he would continue the rest of his life.

As a result, Isabella began to travel freely and live independently from her husband until his death on 19 March 1519.

Although Gutenberg was financially unsuccessful in his lifetime, the printing technologies spread quickly, and news and books began to travel across Europe much faster than before.

When their film careers both began to founder at the end of the silent era Fairbanks ' restless nature prompted him to overseas travel ( something which Pickford did not enjoy ).

In 1627, Musashi began to travel again.

After Python, he began a new career as a travel writer and travel documentarian.

In the 1930s, Meher Baba began a period of extensive world travel, with several trips to Europe and the United States.

The National Geographic Society began as a club for an elite group of academics and wealthy patrons interested in travel.

In February 2006, the final construction phase began on the Trans-Garagum Railway, a direct link between Ashgabat and Dashhowuz that will halve travel time between the southern and northern borders.

Large numbers travelling to quiet fishing villages such as Worthing, Brighton, Morecambe and Scarborough began turning them into major tourist centres, and people like Thomas Cook saw tourism and even overseas travel as viable businesses.

* On May 24, 1976, supersonic air travel between Dulles and Europe began with the arrival of a British Airways Concorde from London and an Air France Concorde from Paris.

East Germany opens checkpoints in the Berlin Wall, allowing its citizens to travel freely to West Germany for the first time in decades ( November 17 celebrates Germans began tearing the wall down ).

Such was Freeman's zeal that he began to travel around the nation in his own personal van, which he called his " lobotomobile ", demonstrating the procedure in psychiatic hospitals.

During the late 1940s and 1950s Williams began to travel widely with his partner Frank Merlo, often spending summers in Europe.

The daric was a major boost to international trade, trade goods such as textiles, carpets, tools and metal objects began to travel throughout Asia, Europe and Africa.

They also began to travel around Cape Horn to trade on the west coast.

As a result, he began to travel to other countries more often.

Gautier began writing poetry as early as 1826 but the majority of his life was spent as a contributor to various journals, mainly La Presse, which also gave him the opportunity for foreign travel and for meeting many influential contacts in high society and in the world of the arts.

By 1869, Leonowens was in New York, where she opened a school for girls for a brief period on Staten Island, and began contributing travel articles to a Boston journal, Atlantic Monthly, including " The Favorite of the Harem ", reviewed by the New York Times as " an Eastern love story, having apparently a strong basis of truth ".

I quickly turned around and began to drink.

As it began raining at around eight o'clock on December 26th, I retired into my tent early, somewhat tired and discouraged, my body reacting sluggishly because of the continued exposure.

but when he passed us by, a musket roared, and he reared his horse, swung it around, and began to whip it back in the direction from which he had come.

Martha picked up the hem of her gown and with eyes closed she slowly began to dance a stately minuet around the ballroom.

In a tour around the stacks, he found that the earliest volumes began on the left and progressed clockwise around the room.

During the Achaemenid Persian Empire, around 600 BC the Persians first began to use the abacus.

Eventually, humans learned to smelt metals such as copper and tin from ore, and, around 2500 BC, began alloying the two metals to form bronze, which is much harder than its ingredients.

The first known smelting of iron began in Anatolia, around 1800 BC.

With the signing of the Treaty of Alfred and Guthrum, an event most commonly held to have taken place around 880 when Guthrum ’ s people began settling East Anglia, Guthrum was neutralised as a threat.

Manuscript production in England dropped off precipitously around the 860s when the Viking invasions began in earnest, not to be revived until the end of the century.

After waking up on flight day four, the crew began preparations for the maneuver that would brake the spacecraft into orbit around the Moon, or lunar orbit insertion.

The polyphony of Christian a cappella music began to develop in Europe around the late 15th century.

He began with a castle on Capo di Bolo, around which he constructed residences for several hundred people.

With him began the long period of ascendancy of the great academies of Babylonia, around the year 220.

Clustered around the Sobu Main line, what began as a host of electrical stores selling vacuum tubes, radio goods and electrical items to the students, has today come to be known as Electric Town.

As a result of the political and economical tensions brought on by the Cold War, on 13 August 1961, East Germany began building of the Berlin Wall between East and West Berlin and similar barriers around West Berlin, and events escalated to a tank standoff at Checkpoint Charlie on 27 October 1961.

26, 000 individuals remain, it began a sudden population decline from around 1980 and is now classified as vulnerable.

The Bronze Age on the Indian subcontinent began around 3300 BC with the beginning of the Indus Valley civilization.

The Branch Davidians ( also known as " The Branch ") are a Protestant sect that originated in 1955 from a schism in the Davidian Seventh Day Adventists (" Davidians "), a reform movement that began within the Seventh-day Adventist Church (" Adventists ") around 1930.

The dynasty was in a position of power for around a decade until the Napoleonic Wars began to take their toll.

Tauranac, an engineer at heart, started to feel his Formula One budget of around £ 100, 000 was a gamble he could not afford to take on his own and began to look around for an experienced business partner.

It was around this time that Chaplin began to conceive the Tramp as " a sort of Pierrot ", or sad clown.

Observations suggest that the universe began around 13. 7 billion years ago.