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Science is a methodical study of nature that forms testable explanations and predictions. An older and closely related meaning still in use today is that found for example in Aristotle, whereby "science" refers to the body of reliable knowledge itself, of the type that can be logically and rationally explained (see "History and etymology" section below). Since classical antiquity science as a type of knowledge was closely linked to philosophy. In the early modern era the two words, "science" and "philosophy", were sometimes used interchangeably in the English language. By the 17th century, "natural philosophy" (which is today called "natural science") had begun to be considered separately from "philosophy" in general. However, "science" continued to be used in a broad sense denoting reliable knowledge about a topic, in the same way it is still used in modern terms such as library science or political science. In modern use, "science" is a term which more often refers to a way of pursuing knowledge, and not the knowledge itself. It is "often treated as synonymous with ‘natural and physical science’, and thus restricted to those branches of study that relate to the phenomena of the material universe and their laws, sometimes with implied exclusion of pure mathematics. This is now the dominant sense in ordinary use." This narrower sense of "science" developed as a part of science became a distinct enterprise of defining "laws of nature", based on early examples such as Kepler's laws, Galileo's laws, and Newton's laws of motion. In this period it became more common to refer to natural philosophy as "natural science". Over the course of the 19th century, the word "science" became increasingly associated with the disciplined study of the natural world including physics, chemistry, geology and biology. This sometimes left the study of human thought and society in a linguistic limbo, which was resolved by classifying these areas of academic study as social science. Similarly, several other major areas of disciplined study and knowledge exist today under the general rubric of "science", such as formal science and applied science.

The "Seven Pillars of Wisdom" rock formation in the Wadi Rum valley of Jordan. It is named after British Army officer T. E. Lawrence's autobiography of the same name, which details events that took place in the area during the Arab Revolt of 1916–18, although the rocks have nothing to do with the book itself. The area is now one of Jordan's important tourist destinations. Photo: Tomobe03 Recently featured: Sceliphron spirifex – Lockheed Martin F-22 Raptor – Century of Progress

May 30: Lod Massacre Remembrance Day in Puerto Rico 1814 – The War of the Sixth Coalition ended with the signing of the Treaty of Paris, which deposed Napoleon and restored Louis XVIII (pictured) to the French throne. 1899 – Female Old West outlaw Pearl Hart performed one of the last recorded stagecoach robberies 30 miles (48 km) southeast of Globe, Arizona. 1925 – Shanghai Municipal Police officers opened fire on Chinese protesters in the city's International Settlement, giving rise to a major labor and anti-imperalist movement. 1959 – The Auckland Harbour Bridge, joining St Marys Bay in Auckland with Northcote in the former North Shore City, New Zealand, was officially opened. 1972 – Members of the Japanese Red Army carried out the Lod Airport massacre in Tel Aviv, Israel, on behalf of the Popular Front for the Liberation of Palestine, killing over 20 people and injuring almost 80 others.

... that the hirola (pictured) is often referred to as the "four-eyed antelope" due to its large preorbital glands? ... that the use of noise by Ottoman military bands inspired European composers such as Haydn, Beethoven, and Mozart? ... that Raymond P. Ahlquist's discovery of adrenergic receptor subtypes was at first largely ignored but eventually led to the development of widely prescribed beta blocker drugs? ... that Pragyananda Mahasthavir was the first Theravada Buddhist monk wearing yellow robes to be seen in Kathmandu since the 14th century? ... that the pro-gay rap song "BEN (Better Everything Now)" was inspired by the coming out of the artist's gay friend and the It Gets Better campaign? ... that Sting supports Bees for Development? ... that National Hero Iswahyudi, dissatisfied with life in Australia, took a rubber boat back to Indonesia?

Louis Slotin (1910–1946) was a Canadian physicist and chemist who took part in the Manhattan Project, the secret U.S. program during World War II that developed the atomic bomb. As part of the Manhattan Project, Slotin performed experiments with uranium and plutonium cores to determine their critical mass values. During World War II, Slotin continued his research at Los Alamos National Laboratory. On 21 May 1946, Slotin accidentally began a fission reaction, which released a burst of hard radiation. He was rushed to a hospital, and died of radiation sickness nine days later on 30 May, the second victim of a criticality accident in history. Slotin was hailed as a hero by the United States government for reacting quickly enough to prevent the deaths of his colleagues due to the accident he caused. The accident and its aftermath have been dramatized in fictional accounts. (more...) Recently featured: Timor Leste Defence Force – "The Last Temptation of Krust" – Kuiper belt

Culture generally refers to the patterns of human activity, and the symbolic structures that give such activities significance and importance. Cultures can be "understood as systems of symbols and meanings that even their creators contest, that lack fixed boundaries, that are constantly in flux, and that interact and compete with one another". Culture can be defined as all the ways of life: including arts, beliefs, and institutions of a population that are passed down from generation to generation. Culture has been called "the way of life for an entire society". As such, it includes codes of manners, dress, language, religion, rituals, and norms of behavior, such as law and morality and systems of belief as well as art.

The word culture is derived from the Latin root cultura or cultus meaning to "inhabit, cultivate, or honour". In general, culture refers to human activity; different definitions of culture reflect different theories for understanding, or criteria for valuing human activity. Anthropologists use the term to refer to the universal human capacity to classify experiences and to encode and communicate them symbolically. They regard this capacity as a defining feature of the genus Homo. Since culture is learned, people living in different places have different cultures. There can be different cultures in different countries, and there can also be shared cultures among continents. The arts are a vast subdivision of culture, composed of many creative endeavors and disciplines. It is a broader term than "art," which as a description of a field usually means only the visual arts. The arts encompasses visual arts, literary arts and the performing arts - music, theatre, dance and film, among others. Art, in its broadest meaning, is the expression of creativity or imagination. The word art comes from the Latin word ars, which, loosely translated, means "arrangement". Art is commonly understood as the act of making works (or artworks) which use the human creative impulse and which have meaning beyond simple description. Art is often distinguished from crafts and recreational hobby activities. The term creative arts denotes a collection of disciplines whose principal purpose is the output of material for the viewer or audience to interpret. As such, art may be taken to include forms as diverse as prose writing, poetry, dance, acting or drama, film, music, sculpture, photography, illustration, architecture, collage, painting and fashion. Art may also be understood as relating to creativity, æsthetics and the generation of emotion.