Forest

A forest is a large area of land covered with trees or other woody vegetation. Hundreds of more precise definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing and ecological function. According to the widely used United Nations Food and Agriculture Organization definition, forests covered an area of four billion hectares (15 million square miles) or approximately 30 percent of the world's land area in 2006.

Forests are the dominant terrestrial ecosystem of Earth, and are distributed across the globe. Forests account for 75% of the gross primary productivity of the Earth's biosphere, and contain 80% of the Earth's plant biomass.

Forests at different latitudes form distinctly different ecozones: boreal forests near the poles tend to consist of evergreens, while tropical forests near the equator tend to be distinct from the temperate forests at mid-latitude. The amount of precipitation and the elevation of the forest also affects forest composition.

Forest (disambiguation)

A forest is a large area covered by trees. Forest may also refer to:

People

Places

United States

Sports

Music

Forest (George Winston album)

Forest is the seventh album of pianist George Winston and his sixth solo piano album, released in 1994. It was reissued on Dancing Cat Records in 2008. The album won the 1996 Grammy Award for Best New Age Album. "Japanese Music Box (Itsuki No Komoriuta)" is a traditional Japanese lullaby that means Lullaby of Itsuki, a region in southern Japan.

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Raven

A raven is one of several larger-bodied members of the genus Corvus. These species do not form a single taxonomic group within the genus, but share similar characteristics and appearances that generally separate them from other crows. The largest raven species are the common raven and the thick-billed raven.

Etymology

The term "raven" originally referred to the common raven, the type species of the genus Corvus, which has a larger distribution than any other species of Corvus, ranging over much of the Northern Hemisphere.

The modern English word raven has cognates in all other Germanic languages, including Old Norse (and subsequently modern Icelandic) hrafn and Old High German (h)raban, all of which descend from Proto-Germanic *khrabanaz.

Obsolete collective nouns for a group of ravens (or at least the common raven) include "unkindness" and "conspiracy". In practice, most people use the more generic "flock".

Species

AeroVironment RQ-11 Raven

The AeroVironment RQ-11 Raven is a small hand-launched remote-controlled unmanned aerial vehicle (or SUAV) developed for the United States military, but now adopted by the military forces of many other countries.

The RQ-11 Raven was originally introduced as the FQM-151 in 1999, but in 2002 developed into its current form, resembling an enlarged FAI class F1C free flight model aircraft in general appearance. The craft is launched by hand and powered by a pusher configuration electric motor. The plane can fly up to 6.2 miles (10.0 km) at altitudes of appx 500 feet (150 m) above ground level (AGL), and over 15,000 feet (4,600 m) above mean sea level (MSL), at flying speeds of 28–60 mph (45–97 km/h).

Design and development

The Raven RQ-11B UAV system is manufactured by AeroVironment. It was the winner of the US Army's SUAV program in 2005, and went into Full-Rate Production (FRP) in 2006. Shortly afterwards, it was also adopted by the US Marines, and the US Air Force for their ongoing FPASS Program. It has also been adopted by the military forces of many other countries (see below). More than 19,000 Raven airframes have been delivered to customers worldwide to date. A new Digital Data Link-enabled version of Raven now in production for US Forces and allies has improved endurance, among many other improvements.

Raven (disambiguation)

Raven is the common name given to several larger-bodied members of the genus Corvus.

Raven may also refer to:

Places

United States

Elsewhere

People

Arts and entertainment

Fictional characters