Northern Ireland was covered by an ice sheet for most of the last ice age and on numerous previous occasions, the legacy of which can be seen in the extensive coverage of drumlins in Counties Fermanagh, Armagh, Antrim and particularly Down. The centrepiece of Northern Ireland's geography is Lough Neagh, at 392 km² the largest freshwater lake in the British Isles. A second extensive lake system is centred on Lower and Upper Lough Erne in Fermanagh.
There have been recent efforts in Ireland to use renewable energy such as wind energy with large wind farms being constructed in coastal counties such as Mayo and County Antrim. Recently what will be the world's largest offshore wind farm is being developed at Arklow Bank off the coast of Wicklow. It is estimated to generate 10% of Irelands energy needs when it is complete. These constructions have in some cases been delayed by opposition from locals, most recently on Achill Island, some of whom consider the wind turbines to be unsightly. Another issue in the Republic of Ireland is the failure of the aging network to cope with the varying availability of power from such installations. Turlough Hill is the only energy storage mechanism in Ireland.
The three most important international airports in the Republic are Dublin Airport, Cork Airport and Shannon Airport. All provide extensive services to the UK, Europe and North America. The Irish national airline Aer Lingus and low-cost operator Ryanair are based at Dublin. Shannon is an important stopover on trans-Atlantic route for refuelling operations. There are several smaller regional airports in the Republic (Galway Airport, Kerry Airport, Knock Airport, Sligo Airport, Waterford Airport) that mostly limit their services to Ireland and the United Kingdom.
From its creation in 1921 until 1972 Northern Ireland enjoyed limited self-government within the United Kingdom, with its own parliament and prime minister. However the Protestant and Catholic communities in Northern Ireland each voted almost entirely along sectarian lines, meaning that the government of Northern Ireland was dominated by the Unionist majority which did not permit Catholics to participate in the government.
The Irish tradition of folk music and dance is also widely known. In the middle years of the 20th century, as Irish society was attempting to modernise, traditional music fell out of favour to some extent, especially in urban areas. Young people at this time tended to look to Britain and, particularly, the United States as models of progress and jazz and rock and roll became extremely popular. During the 1960s, and inspired by the American folk music movement, there was a revival of interest in the Irish tradition. This revival was inspired by groups like The Dubliners, the Clancy Brothers and Sweeney's Men and individuals like Sean Ó Riada.
The culture of the people living on the island of Ireland is far from monolithic. Many notable cultural divides exist between the rural people and city dwellers, between the Catholic and Protestant people of Northern Ireland, between the Irish-speaking people within and without the Gaeltacht regions and the English-speaking majority population, between the settled people and the Travellers, and, increasingly, between new immigrants and the native population.
Ulster Scots comprises varieties of the Scots language spoken in Northern Ireland. Many claim it has become a separate language, descended from Scots in Scotland, whereas others question whether Scots is a separate language from English at all, or simply a collection of local dialects of Scottish and Northern Ireland Hiberno-English.
In a number of areas, the island operates officially as a single entity, for example, in sport. The major religions, the Roman Catholic Church, the Church of Ireland and the Presbyterian Church of Ireland, are organised on an all-island basis. 92% of the population of the Republic of Ireland are Roman Catholic, and 40% in Northern Ireland. Some trades unions are also organised on an all-Irish basis and associated with the Irish Congress of Trades Unions (ICTU) in Dublin, while others in Northern Ireland are affiliated with the Trades Union Congress (TUC) in the United Kingdom. The island also has a shared culture across the divide in many other ways. Traditional Irish music, for example, though showing some variance in all geographical areas, is broadly speaking the same on both sides of the border. Irish and Scottish traditional music are similar.
Northern Ireland has been a major factor in Irish politics since the island of Ireland was divided between Northern Ireland and the twenty-six county southern state in 1920. The creation of Northern Ireland led to conflict between northern nationalists (mostly Catholic) who seek unification with the independent southern state and Unionists (mostly Protestant) who wish for Northern Ireland to remain within the United Kingdom. This conflict exploded into a violent conflict in the late sixties known as the 'Troubles' involving groups such as the Provisional IRA, loyalist paramilitaries, the police and the British army. The Troubles have caused thousands of deaths in Northern Ireland but have also spilled over into bombings and acts of violence on Great Britain and in the Republic of Ireland.
The dialect of English spoken in Northern Ireland shows heavy influence by that of Scotland, thereby giving it a distinct accent compared to other forms of Hiberno-English, along with the use of such Scots words as wee for 'little' and aye for 'yes'. Some jocularly call this version of Hiberno-English phonetically by the name Norn Iron. There are supposedly some minute differences in pronunciation between Protestants and Catholics, the best known of which is the name of the letter h, which Protestants tend to pronounce as "aitch", as in British English, and Catholics tend to pronounce as "haitch", as in Hiberno-English. However, geography is a much more important determinant of dialect than ethnic background. English is by far the most widely spoken language in Northern Ireland.
Northern Ireland is an administrative region and one of four constituent parts of the United Kingdom. It is located on the island of Ireland, where it shares a land border with the Republic of Ireland, the only part of the United Kingdom with a land border. It covers 14,139 square kilometres (5,459 square miles) in the north-east of the island of Ireland, about a sixth of the total area of the island, and has a population of 1,685,000 (April 2001) — between a quarter and a third of the total island's population.
A majority of the present-day population are unionist and wish to remain part of the United Kingdom, but a significant minority, known as nationalists, want to see a united Ireland. These two views are linked to deeper cultural divisions. Unionists are predominantly Protestant and often descendants of Scottish and English (mainly Scottish) settlement in previous centuries, while nationalists are predominantly Catholic and usually descend from the Irish population predating such settlement. The conflict between these two sets of identities, including alleged discrimination against nationalists under the Stormont government (1920–72) giving rise to the nationalist "Civil Rights Movement" in the 1960s, and eventually to a long-running conflict known as The Troubles.
Pub culture, as it is termed, pervades Irish society, across all cultural divides. The term refers to the Irish habit of frequenting public houses (pubs) or bars. Traditional pub culture is concerned with more than just drinking, even though Ireland has a recognised problem with over-consumption of alcohol, with the highest drink consumption in Europe. Per capita alcohol consumption increased by 41% in the period 1989 to 1999. Typically pubs are important meeting places, where people can gather today in the modern Ireland and meet their neighbours and friends in a relaxed atmosphere. Pubs vary widely according to the clientele they serve, and the area they are in. Best known, and loved amongst tourists is the traditional pub, with its tradional Irish music (or "trad music"), tavern-like warmness, and memorabilia filling it.
With its improved international reputation, Northern Ireland has recently witnessed rising numbers of tourists who come to appreciate the area's unique heritage. Attractions include cultural festivals, musical and artistic traditions, countryside and geographical sites of interest, pubs, welcoming hospitality and sports (especially golf and fishing).
Nationalist grievances at Unionist discrimination within the state eventually led to large civil rights protests in 1960s. It was during this period of civil unrest that the Provisional IRA, an extra-legal paramilitary group favouring the creation of a united Ireland, began its campaign of bombings and shootings. Other groups on both the Unionist and nationalist side also began to participate in the violence and the period known as the "Troubles" began. Owing to the civil unrest the British government suspended home rule in 1972 and imposed direct rule.
