Little Ice Age

The Little Ice Age (LIA) was a period of cooling that occurred after the Medieval Warm Period (Medieval Climate Optimum). While it was not a true ice age, the term was introduced into the scientific literature by François E. Matthes in 1939. It has been conventionally defined as a period extending from the sixteenth to the nineteenth centuries, or alternatively, from about 1300 to about 1850, although climatologists and historians working with local records no longer expect to agree on either the start or end dates of this period, which varied according to local conditions.

The NASA Earth Observatory notes three particularly cold intervals: one beginning about 1650, another about 1770, and the last in 1850, each separated by intervals of slight warming. The Intergovernmental Panel on Climate Change Third Assessment Report considered the timing and areas affected by the LIA suggested largely independent regional climate changes, rather than a globally synchronous increased glaciation. At most there was modest cooling of the Northern Hemisphere during the period.

Ice age

An ice age is a period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Within a long-term ice age, individual pulses of cold climate are termed "glacial periods" (or alternatively "glacials" or "glaciations" or colloquially as "ice age"), and intermittent warm periods are called "interglacials". Glaciologically, ice age implies the presence of extensive ice sheets in the northern and southern hemispheres. By this definition, we are in an interglacial period—the Holocene—of the ice age that began 2.6 million years ago at the start of the Pleistocene epoch, because the Greenland, Arctic, and Antarctic ice sheets still exist.

Origin of ice age theory

In 1742 Pierre Martel (1706–1767), an engineer and geographer living in Geneva, visited the valley of Chamonix in the Alps of Savoy. Two years later he published an account of his journey. He reported that the inhabitants of that valley attributed the dispersal of erratic boulders to the glaciers, saying that they had once extended much farther. Later similar explanations were reported from other regions of the Alps. In 1815 the carpenter and chamois hunter Jean-Pierre Perraudin (1767–1858) explained erratic boulders in the Val de Bagnes in the Swiss canton of Valais as being due to glaciers previously extending further. An unknown woodcutter from Meiringen in the Bernese Oberland advocated a similar idea in a discussion with the Swiss-German geologist Jean de Charpentier (1786–1855) in 1834. Comparable explanations are also known from the Val de Ferret in the Valais and the Seeland in western Switzerland and in Goethe's scientific work. Such explanations could also be found in other parts of the world. When the Bavarian naturalist Ernst von Bibra (1806–1878) visited the Chilean Andes in 1849–1850, the natives attributed fossil moraines to the former action of glaciers.

Little Theatre (Rochester, New York)

The Little Theatre in Rochester, New York, commonly known as "The Little" is a movie theatre located on historic East Avenue in downtown Rochester, New York and a modest non-profit multiplex specializing in art film, including independent and foreign productions outside the United States.

Founded in 1928, The Little is one of the oldest active movie theaters built specifically to show films in the US, serving as an alternative venue for cinema of higher artistic caliber than what was popular at the time. To remain in business, The Little has created a unique theater experience for its patrons strikingly different from that of standard commercial cinemas. The Little typically shows films that never make it to the large theater chains, either due to lack of publicity, popularity, exposure, or content that is too risky and/or inappropriate for larger audiences (such as NC-17 rated films). Foreign films, independent films, some documentary films and art films are its common fare.

Little

Little is a surname in the English language. The name is ultimately derived from the Middle English littel, and the Old English lȳtel, which mean "little". In some cases the name was originally a nickname for a little man. In other cases, the name was used to distinguish the younger of two bearers of the same personal name. Early records of the name include: Litle, in 972; Litle, in about 1095; and le Lytle, in 1296. The surname has absorbed several non English-language surnames. For example, Little is sometimes a translation of the Irish Ó Beagáin, meaning "descendant of Beagán". Little can also be a translation of the French Petit and Lepetit, as well as other surnames in various languages with the same meaning ("little"), especially the German name Klein during World War II.

People

Climate change

Climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time (i.e., decades to millions of years). Climate change may refer to a change in average weather conditions, or in the time variation of weather around longer-term average conditions (i.e., more or fewer extreme weather events). Climate change is caused by factors such as biotic processes, variations in solar radiation received by Earth, plate tectonics, and volcanic eruptions. Certain human activities have also been identified as significant causes of recent climate change, often referred to as "global warming".

Scientists actively work to understand past and future climate by using observations and theoretical models. A climate record—extending deep into the Earth's past—has been assembled, and continues to be built up, based on geological evidence from borehole temperature profiles, cores removed from deep accumulations of ice, floral and faunal records, glacial and periglacial processes, stable-isotope and other analyses of sediment layers, and records of past sea levels. More recent data are provided by the instrumental record. General circulation models, based on the physical sciences, are often used in theoretical approaches to match past climate data, make future projections, and link causes and effects in climate change.