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Geography is the science that studies the lands, the features, the inhabitants, and the phenomena of the Earth. A literal translation would be "to describe or write about the Earth". The first person to use the word "geography" was Eratosthenes (276–194 BC). Four historical traditions in geographical research are the spatial analysis of the natural and the human phenomena (geography as the study of distribution), the area studies (places and regions), the study of the human-land relationship, and research in the Earth sciences. Modern geography is an all-encompassing discipline that foremost seeks to understand the Earth and all of its human and natural complexities—not merely where objects are, but how they have changed and come to be. Geography has been called "the world discipline" and "the bridge between the human and the physical science". Geography is divided into two main branches: human geography and physical geography.
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Mauna Loa is an active shield volcano in the Hawaiian Islands, one of five volcanoes that form the Island of Hawaii. Mauna Loa is Earth's largest volcano, with a volume estimated at approximately 18,000 cubic miles (75,000 km³), although its peak is about 36 m (120 ft) lower than that of its neighbor, Mauna Kea. Lava eruptions from Mauna Loa are very fluid and the volcano has extremely shallow slopes as a result. The volcano has probably been erupting for at least 700,000 years and may have emerged from the sea about 400,000 years ago. Its magma comes from a hotspot in the Earth's mantle far beneath the island that has been responsible for the creation of the Hawaiian island chain for tens of million of years. The slow drift of the Pacific Plate will eventually carry the volcano away from the hotspot, and the volcano will thus become extinct within 500,000 to one million years from now. The first recorded summiting of Mauna Loa was in 1794 by naturalist Archibald Menzies, then-Lieutenant Joseph Baker, and two others. Mauna Loa's most recent eruption occurred from March 24, 1984 to April 15, 1984. In view of the hazards it poses to population centers, Mauna Loa is part of the Decade Volcanoes program, which encourages studies of the most dangerous volcanoes. Mauna Loa has been intensively monitored by the Hawaiian Volcano Observatory (HVO) since 1912. Observations of the atmosphere are undertaken at the Mauna Loa Observatory, and of the Sun at the Mauna Loa Solar Observatory, both located near its summit.
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Emery Molyneux was an Elizabethan maker of globes, mathematical instruments and ordnance. His terrestrial and celestial globes, first published in 1592, were the first to be made in England and the first to be made by an Englishman. Molyneux was known as a mathematician and maker of mathematical instruments such as compasses and hourglasses. His globes were the first to be made in such a way that they were unaffected by the humidity at sea, and they came into general use on ships. He became acquainted with many prominent men of the day, including the writer Richard Hakluyt and the mathematicians Robert Hues and Edward Wright. He also knew the explorers Thomas Cavendish, Francis Drake, Walter Raleigh and John Davis. Davis probably introduced Molyneux to his own patron, the London merchant William Sanderson, who largely financed the construction of the globes. When completed, the globes were presented to Elizabeth I. Molyneux emigrated to Amsterdam with his wife in 1596 or 1597. He succeeded in interesting the States-General, the parliament of the United Provinces, in a cannon he had invented, but he died suddenly in June 1598, apparently in poverty. The globe-making industry in England died with him. Only six of his globes are believed to be still in existence.
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Credit: Jacques Descloitres, MODIS Rapid Response Team, NASA/GSFC
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The Nile Delta is the delta formed in Northern Egypt where the Nile River spreads out and drains into the Mediterranean Sea. It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers 240 km of Mediterranean coastline—and is a rich agricultural region. From north to south the delta is approximately 160 km in length. The Delta begins slightly down-river from Cairo.
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The vast material resources of Oregon furnish a solid and enduring basis for the spirit of enterprise that animates our people, and for that wonderful superstructure of vigorous and thrifty statehood which we are rearing here on this western shore of the continent. |
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