A grassroots movement is one that uses the people in a given district, region or community as the basis for a political or economic movement. Grassroots movements and organizations use collective action from the local level to effect change at the local, regional, national or international level. Grassroots movements are associated with bottom-up, rather than top-down decision making, and are sometimes considered more natural or spontaneous than more traditional power structures.Grassroots movements, using self-organization, encourage community members to contribute by taking responsibility and action for their community. Grassroots movements utilize a variety of strategies from fundraising and registering voters, to simply encouraging political conversation. Goals of specific movements vary and change, but the movements are consistent in their focus on increasing mass participation in politics. These political movements may begin as small and at the local level, but grassroots politics as Cornel West contends are necessary in shaping progressive politics as they bring public attention to regional political concerns.The idea of...

The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided. Separate names are used to identify five different areas of the ocean: Pacific (the largest), Atlantic, Indian, Southern (Antarctic), and Arctic (the smallest). Seawater covers approximately 361,000,000 km2 (139,000,000 sq mi) of the planet. The ocean is the principal component of Earth's hydrosphere, and therefore integral to life on Earth. Acting as a huge heat reservoir, the ocean influences climate and weather patterns, the carbon cycle, and the water cycle. Oceanographers divide the ocean into different vertical and horizontal zones based on physical and biological conditions. The pelagic zone consists of the water column from surface to ocean floor throughout the open ocean. The water column is further categorized in other zones depending on depth and on how much light is present. The photic zone includes water from the surface to a depth...

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Human-powered transport is the transport of person(s) and/or goods using human muscle power. Unlike animal-powered transport, human-powered transport has existed since time immemorial in the form of walking, running and swimming. Modern technology has allowed machines to enhance human-power. Although motorization has increased speed and load capacity, many forms of human-powered transport remain popular for reasons of cost, convenience, leisure, physical exercise, and environmentalism. Human-powered transport is sometimes the only type available, especially in underdeveloped or inaccessible regions. Modes Non-vehicular Crawling (human) Walking (233 watts at 3 mph)Walking bus Running (1,150 watts at 10 mph) Sprinting (1,690 watts at 15 mph) Swimming Climbing and mountaineering Ice skating, roller skating, and inline skating Cross-country skiingHuman-powered vehicles (HPVs) ...

A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a pilot controls the aircraft. The cockpit of an aircraft contains flight instruments on an instrument panel, and the controls that enable the pilot to fly the aircraft. In most airliners, a door separates the cockpit from the aircraft cabin. After the September 11, 2001 attacks, all major airlines fortified their cockpits against access by hijackers. Etymology The word cockpit seems to have been used as a nautical term in the 17th century, without reference to cock fighting. It referred to an area in the rear of a ship where the cockswain's station was located, the cockswain being the pilot of a smaller "boat" that could be dispatched from the ship to board another ship or to bring people ashore. The word "cockswain" in turn derives from the old English terms for "boat-servant" (coque is the French word for "shell"; and swain was old English for boy or servant). The midshipmen and master's mates were later berthed in the cockpit, and it served as the action station for the ship's surgeon and...

Tomognathus was a halecomorph fish related to the modern bowfin that lived in the Cretaceous Period. It was named by Dixon in 1850. The name Tomognathus was also later applied to a modern species of ant by Mayr in 1861. But since the name was already taken it came instead to be classified as Harpagoxenus. References Cavin, Lionel; Giner, Stephen (2012). "A large halecomorph fish (Actinopterygii: Holostei) from the Valanginian (Early Cretaceous) of southeast France". Cretaceous Research. 37: 201–208. doi:10.1016/j.cretres.2012.03.020....

The Lloyds Bank coprolite is a large coprolite, or fossilised specimen of human faeces, recovered by the York Archaeological Trust while excavating the Viking settlement of Jórvík (present-day York) in northern England. Description The coprolite was found in 1972 beneath the site of what was to become the branch of Lloyds Bank on Pavement in York, and may be the largest example of fossilised human faeces (palaeofaeces) ever found, measuring 20 centimetres (8 in) long and 5 centimetres (2 in) wide. Analysis of the stool has indicated that its producer subsisted largely on meat and bread whilst the presence of several hundred parasitic eggs suggests they were riddled with intestinal worms. In 1991, Andrew Jones, a York Archaeological Trust employee and palaeoscatologist, made international news with his appraisal of the item for insurance purposes: "This is the most exciting piece of excrement I've ever seen ... In its own way, it's as irreplaceable as the Crown Jewels". The layers that covered the coprolite were moist and peaty. The archaeologists also preserved timber, textiles and leather from...

Tone color definition, tone quality; timbre. See more.

Calisthenics (American English) or callisthenics (British English) (/ˌkælɪsˈθɛnɪks/) is a form of strength training consisting of a variety of movements that exercise large muscle groups (gross motor movements), such as standing, grasping, pushing, etc. These exercises are often performed rhythmically and with minimal equipment, as bodyweight exercises. They are intended to increase strength, fitness, and flexibility, through movements such as pulling, pushing, bending, jumping, or swinging, using one's body weight for resistance. Calisthenics can provide the benefits of muscular and aerobic conditioning, in addition to improving psychomotor skills such as balance, agility, and coordination. Urban calisthenics is a form of street workout; calisthenics groups perform exercise routines in urban areas. Individuals and groups train to perform advanced calisthenics skills such as muscle-ups, levers, and various freestyle moves such as spins and flips. Sports teams and military units often perform leader-directed group calisthenics as a form of synchronized physical training (often including a customized "call and response" routine) to increase group cohesion...