The facts about Mercury

Mercury is the in close proximity planet to the Sun and the eighth biggest. Mercury is somewhat slighter in diameter than the moons Ganymede and Titan but more than twice as enormous.

Mercury's orbit is exceptionally eccentric; at perihelion it is just 46 million km from the Sun but at aphelion it is 70 million. The position of the perihelion processes regarding the Sun at a very slow rate. 19th century astronomers made extremely careful explanation of Mercury's orbital parameters but could not sufficiently explain those using Newtonian mechanics. The tiny differences between the experimental and predicted values were a slight but nagging problem for many decades. It was thought that one more planet (sometimes called Vulcan) slightly nearer to the Sun than Mercury power account for the discrepancy. But in spite of much effort, no such planet was found. The real reply turned out to be much more dramatic: Einstein's General Theory of Relativity! Its right forecast of the motions of Mercury was a main factor in the early acceptance of the theory.

Vehicle

The Trikke is a Human mechanical Vehicle (HPV) This article is about the means of transport. For additional uses see Vehicle (disambiguation).

Vehicles are lifeless means of transportation. They are nearly everyone often man-made (e.g. bicycles, cars, motorcycles, trains, ships, and aircraft), although some other means of transportation which are not made by man can also be called vehicles; examples include icebergs and floating tree trunks.

Vehicles possibly will be propelled by animals, e.g. a chariot or an ox-cart. However, animals on their own, although used as a means of transportation, are not called vehicles. This includes humans carrying another human, for example a child or a disabled person.

Vehicles that do not voyage on land are often called crafts, such as watercraft, sailcraft, aircraft, hovercraft and spacecraft.

Most land vehicles contain wheels. Please observe the wheel article for examples of vehicles with and without wheels.

Movement without the rally round of a vehicle or an animal is called locomotion. The word vehicle itself comes starting the Latin vehiculum.

Abstract art

Abstract art is now typically understood to mean art that does not depict objects in the natural world, but instead uses color and form in a non-representational way. In the very near the beginning 20th century, the term was more often used to describe art, such as Cubist and Futurist art, that depicts real forms in a simplified or rather reduced way—keeping only an allusion of the original natural subject. Such paintings were often claimed to capture astonishing of the depicted objects' immutable intrinsic qualities rather than its external appearance. The additional precise terms, "non-figurative art," "non-objective art," and "non-representational art" keep away from any possible ambiguity.

Bay of Bengal

The Bay of Bengal is a cove that forms the northeastern ingredient of the Indian Ocean. It resembles a triangle in form, and is enclosed on the east by Malay Peninsula, and on the west by India. On the northern pour of the "bay" lies the Bengal region, comprising the Indian state of West Bengal and the country of Bangladesh, thus the name. The southern boundaries arrive at the island country of Sri Lanka, and the Indian Union Territory of Andaman and Nicobar Islands.

The Bay of Bengal occupies a region of 2,172,000 km². It is bordered by India and Sri Lanka to the West, Bangladesh to the North, and Myanmar and the southern division of Thailand to the East. Its southern border extends as an imaginary line from Dondra Head at the southern end of Sri Lanka to the northern angle of Sumatra. A number of huge rivers – Ganges, Brahmaputra, Irrawaddy, Godavari, Mahanadi, Krishna and Cauvery – run into the Bay of Bengal. Among the vital ports are Yangon, Kolkata/Calcutta, Chittagong, Cuddalore, Kakinada, Machlipatnam, Madras, Paradip and Vishakapatnam.

Salad

Salad is a light meal — or, as part of a bigger meal, much more of an taster — consisting of varied vegetables (usually including at least one leaf vegetable) or fruit, frequently with a dressing or sauce, occasionally nuts and sometimes with the addition of meat, fish or cheese. It is usually seen as a healthy dish, even though not always low in calories, salt, sugar, or fat because of the dressing that is often added. The word "salad" comes from the French salade of the identical meaning, which in twist is from the Latin salata, "salty", from sal, "salt".

Traffic light

A traffic light or traffic signal is a signalling device positioned at a road junction or pedestrian crossing to indicate when it is safe to drive, ride or walk, using a universal color code.Traffic lights for usual vehicles or pedestrians always have two main lights, a red one that means stop and a green one that means go. Generally, the red light contains some orange in its hue, and the green light contains some blue, to provide some support for people with red-green color blindness. In most countries there is also a yellow (or amber) light, which when on and not flashing means stop if able to do so securely. In some systems, a flashing amber means that a motorist may go in advance with care if the road is clear, giving way to pedestrians and to other road vehicles that may have precedence. A flashing red effectively means the same as a regular stop sign. There may be additional lights (usually a green arrow or "filter") to allow turns (called a lead light in the U.S., because it is usually leading the main green light).

Players of Cricket

A team contains an eleven players. Depending on his or her most important skills, a player may be classified as a specialist batsman or bowler. A balanced team generally has five or six expert batsmen and four or five expert bowlers. Teams nearly for all time include a specialist wicket-keeper because of the importance of this fielding position. Each team is headed by a captain, who is in charge for making strategic decisions such as determining the batting order, the placement of fielders and the rotation of bowlers.

A player who excels in both batting and bowling is called as an all-rounder. One who excels as a batsman and wicket-keeper is known as a "wicket-keeper/batsman", sometimes regarded as a kind of all-rounder. True all-rounders are rare; most players focal point on either batting or bowling skills.

One-day Match & Draw Match

If the team batting last is all out, and in cooperation sides have scored the same number of runs, then the match is a tie; this result is reasonably rare in matches of two innings a side. In the traditional form of the game, if the time allotted for the match expires before either side can win, then the game is declared a draw.

If the match has only a single innings for each side, then a maximum number of deliveries for every innings is often imposed. Such a match is called a "limited overs" or "one-day" match, and the side scoring more runs wins in spite of of the number of wickets lost, so that a draw cannot occur. If this kind of match is for the moment interrupted by bad weather, then a complex mathematical formula, known as the Duckworth-Lewis method after its developers, is often used to recalculate a new aim score. A one-day match can also be declared a "no-result" if less than a previously agreed number of overs have been bowled by either team, in circumstances that make normal recommencement of play impossible; for example, wet weather.

Results of cricket

If the team that bats last is all out previous to it has reached the total required to win, it is said to have "lost by n runs" (where n is the difference between the number of runs scored by the teams). If the team that bats very last scores enough runs to win, it is said to have "won by n wickets", where n is the number of wickets left to fall. For occurrence a team that passes its opponents' score having only lost six wickets would have won "by four wickets".

In a two-innings-a-side match, one team's combined first and second innings total may be less than the another side's first innings total. The team with the greater score is then said to have won by an innings and n runs, and does not require to bat again: n is the difference between the two teams' aggregate scores.

Overview of Cricket


The aim of the batting team is to score as several runs as possible. A run is scored when both batsmen effectively move to their respective opposite ends of the pitch. (The batsmen will usually only attempt to score runs after the striker has hit the ball, but this is not required by the rules—the batsmen can attempt runs at any time after the ball has been bowled.) Runs are also scored if the batsman hits the ball to the boundary of the before a live audience area (this scores six runs if the ball crosses the boundary without having touched the ground, or four runs otherwise), or if the bowler commits some technical contravention like bowling the ball out of reach of the batsman.[citation needed]

The aim of the bowler's side is to get each batsman out (this is called a "taking a wicket", or a "dismissal"). Dismissals are achieved in a different ways. The most straight way is for the bowler to bowl the ball so that the batsman misses it and it hits the stumps, dislodging a bail. While the batsmen are attempting a run, the fielders may dismiss either batsman by using the ball to beat the bails off the set of stumps to which the batsman is closest before he has grounded himself or his bat in the crease. Other ways for the fielding side to dismiss a batsman contain catching the ball off the bat before it touches the ground, or having the batsman adjudged "leg before wicket" (abbreviated "L.B.W." or "lbw") if the ball strikes the batsman's body and would have gone on to hit the wicket. Once the batsmen are not attempting to achieve any more runs, the ball is "dead", and is bowled again (each attempt at bowling the ball is a "ball" or a "delivery").

History of cricket

Cricket has been a standard team sport for hundreds of years. It originated in its modern form in England and is most well-liked in the present and earlier members of the Commonwealth. Cricket is the second the majority popular sport in the world. More than a hundred cricket-playing nations are familiar by the International Cricket Council. In the countries of South Asia, including India, Pakistan, Bangladesh and Sri Lanka, cricket is the most well-liked sport. It is also a main sport in England, Australia, New Zealand, South Africa, Zimbabwe and the English-speaking countries of the Caribbean, which are together known in cricketing parlance as the West Indies. There are also well-established part-time club competitions in countries as diverse as the Netherlands, Kenya, Nepal and Argentina, among others.

Cricket

Cricket is a bat-and-ball sport contest by two teams, regularly of eleven players each.A cricket match is played on a grass ground, roughly oval in shape, in the centre of which is a flat strip of ground 22 yards (20.12 m) long, called a cricket pitch. A wicket, regularly made of wood, is placed at each end of the pitch.

The bowler, a player from the fielding team, hurls a hard, fist-sized cricket ball from the surrounding area of one wicket towards the other. The ball usually bounces once before attainment the batsman, a player from the opposing team. In boldness of the wicket, the batsman plays the ball with a wooden cricket bat. Meanwhile, the other members of the bowler's team stand in different positions around the field as fielders, players who retrieve the ball in an effort to stop the batsman scoring, and if possible to get him or her out. The batsman—if he or she does not get out—may run between the wickets, exchanging ends with a second batsman (the "non-striker"), who has been coming up near the bowler's wicket. Each completed exchange of ends scores one run. Runs are also scored if the batsman hits the ball to the boundary of the in performance area. The match is won by the team that team must took more runs.

Krill fishery

Krill fishery is the profitable fishery of krill, small shrimp-like marine animals that live in the oceans world-wide. Estimates for how much krill there is vary wildly, depending on the methodology used. They range from 125–725 million tones of biomass globally. The total global harvest of krill from all fisheries amounts to 150 – 200,000 tones annually, mainly Antarctic krill (Euphausia superb) and North Pacific krill (E. Pacifica).

Krill are rich in protein (40% or more of dry weight) and lipids (about 20% in E. superb). Their exoskeleton amounts to some 2% of dry weight of chitin. They also contain traces of a wide array of hydrolytic enzymes such as proteases, carbohydrates, nucleases and phospholipids, which are intense in the digestive gland in the cephalothoraxes of the krill.

Pollen

Pollen is a fine to coarse powder consisting of micro gametophytes (pollen grains), which create the male gametes (sperm cells) of seed plants. The pollen grains with its hard coat protect the sperm cells throughout the process of their movement between the stamens of the flower to the pistil of the next flower.

Earth's atmosphere

Earth's atmosphere is a layer of gases surrounding the planet Earth and retain by the Earth's gravity. It contains roughly (by molar content/volume) 78% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide; trace amounts of other gases, and a changeable amount (average around 1%) of water vapor. This mixture of gases is usually known as air. The atmosphere protects life on Earth by captivating ultraviolet solar radiation and reducing temperature extremes between day and night.

There is no exact border between the atmosphere and outer space, it slowly becomes thinner and fades into liberty. Three quarters of the atmosphere's mass is within 11 km of the terrestrial surface. In the United States, people who travel above a height of 80.5 km (50 statute miles) are selected astronauts. An altitude of 120 km (400,000 ft) marks the boundary where atmospheric property becomes obvious during re-entry. The Kármán line, at 100 km (328,000 ft), is also often regarded as the boundary between atmosphere and outer space.

Dance

Dance means in Old French dancier, perhaps from Frankish generally refers to human movement also used as a form of expression or presented in a social, spiritual or performance setting.

Dance also is used to explain methods of non-verbal communication (see body language) between humans or animals (bee dance, mating dance), motion in inanimate objects (the leaves danced in the wind), and certain musical forms or genres.

Choreography is the art of making dances, and the human being who does this is called a choreographer.

Definitions of what constitutes dance are dependent on social, cultural, visual, artistic and moral constraints and variety from functional movement (such as folk dance) to codified, virtuoso techniques such as ballet. Dance disciplines live in sports such as gymnastics, figure skating, and synchronized swimming and martial arts kata are often compare to dance.

Leaf vegetable


Leaf vegetables, also called potherbs, greens, or leafy greens, are plant leaves eat as a vegetable; sometimes attend by tender petioles and shoots. Although they come from a very broad diversity of plants, most share a great deal with other leaf vegetables in nutrition and cooking methods.

Nearly one thousand types of plants with edible leaves are known Leaf vegetables most often come from short-lived herbaceous plants such as lettuce and spinach. Woody plants whose leaves can be eaten as leaf vegetables include Adenosine, Aralia, and Moringa, Morus, and Toona species.

The leaves of many fodder crops are also edible by humans, but frequently only eaten under famine conditions. Examples include alfalfa, clover, and most grasses, as well as wheat and barley. These plants are often much more prolific than more traditional leaf vegetables, but utilization of their rich nutrition is difficult, primarily because of their high fiber content. This obstacle can be overcome by further giving out such as drying and grinding into powder or pulping and pressing for juice.

During the first half of the 20th century many grocery stores with vegetable sections sold small bunch of herbs tied with a thread to small green and red peppers known as "potherbs."

Chemistry

Chemistry is the science of matter at the atomic to molecular scale, production mainly with collections of atoms, such as gases, molecules, crystals, and metals. Chemistry deals with the composition and statistical properties of such structures, as well as their transformations and interactions to become materials encountered in daily life. Chemistry also deals with sympathetic the properties and interactions of individual atoms with the purpose of applying that knowledge at the macroscopic level. According to contemporary chemistry, the physical properties of materials are usually determined by their structure at the atomic scale, which is itself defined by interatomic forces.

Chef's uniform

The conventional chef's uniform, including toque (traditional hat), white double breasted jacket, and checked pants are immediately recognized by most members of the Western world, especially in this day of television's celebrity chefs. The double breasted jacket can be inverted to conceal stains. Its thick cotton cloth protects from the heat of stove and oven and protects from splattering of steaming liquids. An apron is an obviously useful piece of utensils used to guard the rest of the wearer's garments from food splatters and stains.

The toque (chef's hat) dates back to the 16th century when hats were regular in many businesses. Different heights of hats point out rank within a kitchen. Some modern chefs have put their own diverse whirl on the traditional uniform. But the traditional, practical, clothing of the chef still remainders a standard in the food industry.

Public transport

Public transport, public transportation, public travel or mass transit comprises all transport systems in which the passengers do not tour in their own vehicles. While it is generally taken to include rail and bus services, wider definitions would comprise scheduled airline services, ship, taxicab services etc. – any system that transports members of the universal public. A further restriction that is sometimes practical is that it must take place in shared vehicles that would bar taxis that are not shared-ride taxis.

Software

Software basically is the distinct image or representation of physical or material position that constitute configuration to or functional identity of a machine, usually a computer. As a substance of memory, software in principle can be changed without the alteration to the static paradigm of the hardware thus without the remanufacturing thereof. Generally software is of an algorithmic form which translates into being to a progression of machine instructions. Some software, however, is relational forms which translate into being the map of a recognition network.

Software is a program that enables a computer to achieve a specific task, as contrasting to the physical components of the system. This include application software such as a word processor, which enables a user to achieve a task, and system software such as an operating system, which enables other software to run suitably, by interfacing with hardware and with other software.

Hummingbird

Hummingbirds are small birds in the family Trochilidae, inhabitant only to the Americas. They are known for their aptitude to hover in mid-air by quickly flapping their wings, 15–80 times per second (depending on the species). The Giant Hummingbird's wings beat 8–10 beats per second, the wings of medium sized hummingbirds beat about 20–25 beats for each second and the smallest beat 70 beats per second. Capable of continued hovering, the hummingbird has the ability to fly intentionally backwards (this is the only group of birds able to do so or vertically, and to maintain position while drinking from flower blossoms. They are named for the feature hum made by their wings.

Hummingbirds are involved to many flowering plants—shrimp plants, Bee Balm, Helicon, Butterfly Bush, Hibiscus, bromeliads, cannas, verbenas, honeysuckles, salvias, pentas, fuchsias, many penstemons. It is frequently stated that they are especially attracted to red and yellow flowers.

Robotics

It is the science and technology of robots, their plan, manufacture, and application.Robotics requires functioning information of electronics, mechanics, and software. A person functioning in the field is a roboticist. The word robotics was first used in issue by Isaac Asimov, in his science fiction short story "Runaround" (1941).

Although the outside and capabilities of robots vary extremely, all robots share the features of a mechanical, movable structure under some form of control. The chain is misshapen of links, actuators and joints which can allow one or more degrees of freedom. Most modern robots use open sequential chains in which each link connects the one before to the one after it. These robots are called serial robots and often look like the human arm. A few robots, such as the Stewart platform, use closed parallel kinematic chains. Other structures, such as those that imitate the mechanical structure of humans, diverse animals and insects, are relatively rare. However, the development and use of such structures in robots is a dynamic area of research. Robots used as manipulators have a finish effector mount on the last link. This end effector can be something from a welding mechanism to a mechanical provide used to manipulate the environment.

Hardware and software design

Supercomputers using custom CPUs traditionally gained their speed over conventional computers through the use of innovative designs that allow them to carry out many tasks in parallel, as well as complex feature engineering. They tend to be expert for certain types of computation, usually numerical calculations, and perform poorly at more general computing tasks. Their memory hierarchy is very cautiously designed to ensure the processor is kept fed with data and commands at all times—in fact, much of the performance difference between slower computers and supercomputers is due to the memory hierarchy. Their I/O systems tend to be planned to support high bandwidth, with latency less of an issue, because supercomputers are not used for transaction processing.

As with all highly parallel systems, Amdahl's law applies, and supercomputer designs devote great effort to eliminate software serialization, and using hardware to speed up the remaining bottlenecks.

Waka

In the Maori language, waka are Maori watercraft, generally canoes. Similar craft are encountered in Polynesia, with related names such as vaka.

Waka range is from small, lightweight canoes, such as waka tiwai used for fishing individuals, during very large waka taua, manned by up to eighty paddlers and up to fourty mtrs in length, large double-hulled canoes for oceanic voyaging.

Many waka are single-hulled vessels set from hollowed tree trunks. Small waka consist of an only piece while large waka usually consist of some pieces jointed and lashed together. Some waka, mainly in the Chatham Islands, were not accustomed canoes but were constructed from raupo stalks.

Ocean waka, Paddled could be in any size, but were generally propelled by sail. Waka taua are paddled to express their mana.

Small utilitarian waka are generally plain and unornamented. Superior canoes waka taua in particular, are highly carved. Waka taua are no longer used in warfare but mostly for ceremonial purposes.

Punt

A punt is a flat-bottomed boat with a square-cut bow, planned for use in small rivers or other shallow water. Punting refers to boating in a punt; the punter normally propels the punt by pushing beside the river bed with a pole.
Punts were initially built as cargo boats or platforms for fowling and angling but in modern times their use is almost wholly confined to pleasure trips on the rivers in the university towns of Oxford and Cambridge in England and races at a few summer regattas on the Thames.
A customary river punt differs from many other types of wooden boat in that it has no keel, stem or sternpost. In its place it is built rather like a ladder with the main structure being two side panels connected by a series of 4 in (10 cm) cross planks, known as "treads", spaced about 1 foot (30 cm) apart.
The first punts are traditionally linked with the River Thames in England and were built as small cargo boats or platforms for fishermen. Pleasure punts — particularly built for recreation — became popular on the Thames between 1840 and 1860. Some other boats have a similar shape to a traditional punt — for example the Optimist training dinghy or the air boats used in the Everglades — but they are normally built with a box construction instead of the open ladder-like design of a traditional Thames pleasure punt.

Pirogue

A pirogue is a small, flat-botomed boat of a design associated mainly with West African fishermen and the Cajuns of the Louisiana marsh. These boats are not typically intended for over-night travel but are light and small sufficient to be easily taken onto land. The design also allows the pirogue to move through very shallow water and be simply turned over to drain any water that may get into the boat. The pirogue's motion comes from paddles that contain one blade (as opposed to a kayak paddle, which has two). It can also be punted with a pole in low water.
There is not one pirogue plan, are several. Besides small pirogues as seen on the picture, there are also pirogues that can hold up to ten men with paddles and also characteristic a main sail. These are not planned (and should not be used) for open waters. They are only (and best) used close to shore.

Lifeboat

A lifeboat is a rigid or inflatable boat planned to save the lives of people in trouble at sea. The term has somewhat special meanings in British and American usage. The British usage emphasizes particular vessels kept in harbor or near a harbor, often manned by volunteers, considered to quickly reach a ship in trouble. The term "lifeboat" in American usage normally refers to rigid or inflatable vessels accepted by larger ships to allow passengers and crew to escape in an emergency.
The first boat expert as a lifeboat was tested on the River Tyne on January 29, 1790. William would have and Lionel Lufkin both claim to be the inventor of the first lifeboat. One example of an early lifeboat was the Land guard Fort Lifeboat of 1821, considered by Richard Hall Gower.
In U.S. waters, rescue-at-sea is part of the duty of the United States Coast Guard, which employs its multipurpose ships and aircraft in this role. The Coast Guard is also responsible for making sure that the proper type and number of lifeboats (American usage) is available and kept in good repair on any large ship. "Lifeboat drills" are a division of a cruise experience.

Houseboat

A houseboat is a boat that has been planned or modified to be used primarily as a human dwelling. Some houseboats are not powered, because they are frequently moored, kept stationary at a fixed point.
Houseboats are common as everlasting dwellings in Southeast Asia; in some other areas, they may serve more regularly as secondary or vacation homes or for tourism.
Australia
In Australia, especially on the Murray River and the sunny coastline of Queensland, there are many motorized, pontoon-based houseboats with two or more bedrooms; some of these houseboats have levels or storey. Some are privately own as either a primary house or a holiday shack. Many are also available for hire (rent) as self-driven holiday purpose with accommodation for four to perhaps a dozen persons. Many males enjoy meeting together to fish and drink alcohol in the safe passages of the Coomera River and The Great Sandy Straits near the World's largest sand island - Fraser Island. A famous cruise destination for Queensland house boaters is the Isle of Barry - a unique, peaceful location sought by many, but only found by a dedicated few.
Europe
In Europe, some of the supreme and costliest examples of houseboats can be seen along the canals of Amsterdam (in the Netherlands), which even has houseboat hotels. Houseboats are very luxurious nowadays in Amsterdam because of the limited number of moorings; this expense has reduced the likelihood that the about 2,400 families that live on the inner waters of Amsterdam will find themselves confronted by new neighbor boats.
India
In India, houseboats are frequent on the backwaters of Kerala; see below, and on the Dal Lake near Srinagar in Jammu and Kashmir.

Fireboat

A fireboat is a paying attention watercraft, often similar to a tugboat, with pumps and nozzles planned for fighting shoreline and shipboard fires. They are mostly useful for fighting fires on docks and shore side warehouses as they can directly attack fires in the supporting underpinnings of these structures. They also have an countless supply of water available, pumping straight from the harbor and can be used to assist shore based firefighters when other water is in low supply or is unavailable, for example, due to earthquake breakage of water mains, as happened in San Francisco due to the 1989 Loma Pieta earthquake.
Modern fireboats are competent of pumping tens of thousands of gallons of water per minute. The most technically advanced of these is Fire Boat #2 of the Los Angeles Fire Department, the Warner Lawrence, with the capability to pump up to 38,000 US gallons per minute (2 m³/s) and up to 400 feet (120 m) in the air.
Fireboats are most frequently seen by the public when welcoming a fleet or historical ships with a display of their water moving capabilities, throwing large arcs of water in every direction.

Spiral escalators

Spiral escalators acquire less horizontal space than straight escalators. However, in the early spiral designs were failures. For example, one spiral escalator constructed by Reno in combination with William Henry Aston and Scott Kietzman at London's Holloway Road Underground position in 1906 was dismantled almost right away and little of the mechanism survives. The Mitsubishi Electric Corporation has urbanized successful commercial designs and has contrived curved and spiral escalators since the 1980s.
Notable sets of spiral escalators are situated in the Westfield San Francisco Centre in San Francisco, California, and at Forum Shops at Caesars Palace in Las Vegas, Nevada. The Times Square shopping mall in Causeway Bay, Hong Kong, also features four curved escalators, as do Wheelock Place in Singapore.

A Snapshot of Macro-Economics

Economics is the learning of making choices. High school and college students all over required to take economic courses in order to achieve a diploma. Why is economics so important because it provides a guide for students for real-world situations. Economics is divided into two types microeconomics and macroeconomics. Microeconomics is the study of economics at a slim level. For example absorbed on how a detailed business functions is microeconomics.
Studying the world economy is classified as Macroeconomics; its center on a much broader level. All students must understand the concept of insufficiency. Scarcity is a condition that occurs because society has unlimited wants and needs however the amount of property is limited. Unlimited wants and needs are what encourage us to create goods and services. We are never satisfied therefore we always have a want or need. On the other hand our income is limited.

Barge

A barge is a flat-bottomed boat, built mostly for river and canal transport of important goods. Most barges are not self-propelled and need to be moved by tugboats towing or towboats pushing them. Barges on inland waterways (towed by draft animals on an adjacent towpath) contended with the railway in the early industrial revolution but were out competed in the carriage of high value items owing to the higher speed, falling costs, and route elasticity of rail transport.
Barges are still used today for low value bulk items, as the cost of hauling goods by barge is very low. Barges are also used for very weighty or bulky items; a typical barge events 195 feet by 35 feet (59.4 meters by 10.6 meters), and can take up to 1500 tons of cargo.

Empire State Building

The Empire State Building is a 102-story contemporary Art Deco style building in New York City, declared by the American Society of Civil Engineers to be one of the Seven Wonders of the Modern World. Designed by Shreve, Lamb and Harmon, it was finished in 1931. The tower takes its name from the nickname of New York State. Since the September 11th attacks, it is again the tallest building in New York City.

Unlike most of today's high-rise buildings, the Empire State has a classic facade. The building's distinctive art deco spire was originally designed to be a mooring mast and depot for zeppelins. However, after a couple of test attempts with airships, the idea proved to be impractical and dangerous due to the powerful updrafts caused by the size of the building itself, though the T-shaped mooring devices remain in place.

Climate versus weather

In the most succinct words, weather is the combination of events in the atmosphere and climate is the overall accumulated weather in a certain location.The exact boundaries of what is climate and what weather is are not well defined and depend on the application. For example, in some senses an individual El Niño event could be considered climate; in others, as weather.

When the original conception of climate as a long-term average came to be considered, perhaps towards the end of the 19th century, the idea of climate change was not current, and a 30 year average seemed reasonable. Given the current availability of data on long-term trends in the temperature record, it is harder to give a definition of climate to suit all purposes: over a 30 year period, averages may shift; over a shorter period, the statistics are less stable.

Genetic Engineering

Genetic engineering, genetic modification and gene splicing are terms for the process of manipulating genes, usually outside the organism's normal reproductive process. It involves the isolation, manipulation and reintroduction of DNA into cells or model organisms, usually to express a protein. The aim is to introduce new characteristics or attributes physiologically or physically, such as making a crop resistant to an herbicide, introducing a novel trait, or producing a new protein or enzyme. Examples can include the production of human insulin through the use of modified bacteria, the production of erythropoietin in Chinese Hamster Ovary cells, and the production of new types of experimental mice such as the OncoMouse for research, through genetic redesign.

Since a protein is specified by a segment of DNA called a gene, future versions of that protein can be modified by changing the gene's underlying DNA. One way to do this is to isolate the piece of DNA containing the gene, precisely cut the gene out, and then reintroduce the gene into a different DNA segment. Daniel Nathans and Hamilton Smith received the 1978 Nobel Prize in physiology or medicine for their isolation of restriction endonucleases, which are able to cut DNA at specific sites. Together with ligase, which can join fragments of DNA together, restriction enzymes formed the initial basis of recombinant DNA technology.