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Whether it's a frisky kitten or a tubby tabby, a cat at home could cut your heart attack risk by almost a third, a new study suggests. The finding, from a 10-year study of more than 4,300 Americans, suggests that the stress relief pets provide humans is heart-healthy.

Cat owners "appeared to have a lower rate of dying from heart attacks" over 10 years of follow-up compared to feline-free folk, Qureshi said.

Memphis, Egypt3100 BCEWell over 30,000 Akkad, Babylonia (Iraq)2240 Lagash, Babylonia (Iraq)2075 Ur, Babylonia (Iraq)203065,000 Thebes, Egypt1980 Babylon, Babylonia (Iraq)1770 Avaris, Egypt1670 Memphis, Egypt1557 Thebes, Egypt1400 Nineveh, Assyria (Iraq)668 Babylon, Babylonia (Iraq)612First above 200,000 Alexandria320 Pataliputra (Patna), India300 Changan (Xi'an), China195400,000 Rome25450,000 (100 CE) Constantinople (Istanbul), Turkey340 CE400,000 (500) Ctesiphon, Iraq570 Changan (Xi'an), China637400,000 (622); 600,000 (800) Baghdad, Iraq775First over 1 million; 700,000 (800) Cordova, Spain935 Kaifeng, China1013400,000 (1000); 442,000 (1100) Constantinople (Istanbul), Turkey1127 Merv (Mary), Turkmenistan1145200,000 (1150) Constantinople (Istanbul), Turkey1153 Fez (Fes), Morocco1170 Hangzhou, China1180255,000 (1200); 320,000 (1250) Cairo, Egypt1315 Hangzhou, China1348432,000 (1350) Nanking, China1358487,000 (1400) Beijing, China1425600,000 (1450); 672,000 (1500) Constantinople (Istanbul), Turkey1650700,000 (1650 & 1700) Beijing, China1710900,000 (1750); 1.1 million (1800) London, United Kingdom1825First over 5 million; 1.35 million (1825); 2.32 million (1850); 4.241 million (1875); 6.480 million (1900) New York1925First over 10 million; 7.774 million (1925), 12.463 million (1950) Tokyo1965First over 20 million; 23 million (1975)

Chandler utilized a plethora of historical sources to locate approximate populations for the world's largest cities since 3100 BCE.

An aircraft is a vehicle which is able to fly through the Earth's atmosphere or through any other atmosphere. Rocket vehicles are not aircraft if they are not supported by the surrounding air. All the human activity which surrounds aircraft is called aviation.

Heavier-than-air aircraft must find some way to push air or gas downwards, so that a reaction occurs (by Newton's laws of motion) to push the aircraft upwards. This dynamic movement through the air is the origin of the term aerodyne. There are two ways to produce dynamic upthrust: aerodynamic lift, and powered lift in the form of engine thrust. Aerodynamic lift is the most common, with aeroplanes being kept in the air by the forward movement of wings, and rotorcraft by spinning wing-shaped rotors sometimes called rotary wings. A wing is a flat, horizontal surface, usually shaped in cross-section as an aerofoil. To fly, the wing must move forwards through the air; this movement of air over the aerofoil shape deflects air downward to create an equal and opposite upward force, called lift, according to Newton's third law of motion. A flexible wing is a wing made of fabric or thin sheet material, often stretched over a rigid frame. A kite is tethered to the ground and relies on the speed of the wind over its wings, which may be flexible or rigid, fixed or rotary. With powered lift, the aircraft directs its engine thrust vertically downwards. The initialism VTOL (vertical take off and landing) is applied to aircraft that can take off and land vertically. Most are rotorcraft. Others, such as the Hawker Siddeley Harrier, take off and land vertically using powered lift and transfer to aerodynamic lift in steady flight. Similarly, STOL stands for short take off and landing. Some VTOL aircraft often operate in a short take off/vertical landing regime known as STOVL. A pure rocket is not usually regarded as an aerodyne, because it does not depend on the air for its lift (and can even fly into space), however many aerodynamic lift vehicles have been powered or assisted by rocket motors. Rocket-powered missiles which obtain aerodynamic lift at very high speed due to airflow over their bodies, are a marginal case.

The forerunner of the aeroplane is the kite

only living member of the family Phascolarctidae, in the order Diprodontia, class Mammalia.

eastern Australia

skull is flattened on the sides

11% decline in album sales during the first half of 2008

Consumers purchased 204.6 million albums between January and June

single track downloads growing 30% to 532.7 million units in the first half of the year over first half sales in 2007 of 417.3 million units

I have always talked to my cats. I say their name when I see them, when I pet them and when I feed them. They know their names and come when called. The human voice is calming to a cat. Some cats will respond when talked to, others just look at me, but at least I have their attention. I've had other cats that would answer every question with different sounds. Since I don't speak "cat" it was impossible to understand, though. Cats can remember us by our voices as well. One of our cats named "Graceful Mowser" was sold to some friends of ours and a year and a half later had kittens. They called her "Mouse". We were invited to see the kittens, but the momma kept standing over them so we couldn't see them. I talked to her, "Hi Gracie, what beautiful babies" and she stood back as if she was proud and looked at me intently. I always called her "Gracie". When other people came to see the kittens she still tried to cover them. Later, whenever we stopped by, Gracie would come to greet us as soon as she heard my voice. Otherwise she was naturally shy and would hide whenever anyone came in the house.

basic laws of physics dictate that energy is conserved and can only be changed from one form to another or into matter.

Fuel, on the other hand, is the accumulation of matter and therefore represents a store of energy.

released in the form of heat when the fuel is burned in chemical or nuclear reactions

Many of us celebrate Thanksgiving and just assume since we do that everyone else does as well. The answer to whether Thanksgiving is celebrated nationally or not is that it is. Most families celebrate Thanksgiving each and every year and individuals from all over the country make plans to eat turkey and give thanks. Thanksgiving is a nationally recognized holiday. Kids dont go to school, most businesses arent open, and politics are briefly put on hold. The most important Thanksgiving activities include eating, watching sports, and spending time with family and friends. No matter where you are in the nation you will find that most people celebrate Thanksgiving pretty much the same. Some families will celebrate at lunchtime and others at dinner and still others may go out to dinner or not celebrate at all. But, for the most part, celebrating Thanksgiving is an American tradition and one that all Americans enjoy taking part in. Parades Around the Country Even if you cant travel the entire country to see how Thanksgiving is celebrated you can get a pretty good idea. There are Thanksgiving Day parades all over the country and many of them are televised. One of the most popular and well known parades is the Macys Thanksgiving Day Parade. This parade has been around for decades and continues to be a hit with New Yorkers as well as individuals around the country who make watching the parade on television part of their celebration. You may choose to attend a parade on Thanksgiving day in your town or perhaps you will choose to watch one on TV. Regardless, parades around the country really make up part of the Thanksgiving culture we have all become so accustomed to. In fact, when you turn the television on Thanksgiving Day you will more than likely see a parade or a football game! Thats just part of Thanksgiving Day culture in our country.

Bats are one of the most prolific forms of mammals with over 900 species living in the world and making up over 20% of all mammals.

Most U.S. bats eat insects. A single bat can eat up to 1,200 mosquitoes in one hour.

Bats like to come out to eat at night around dusk. Bats flight pattern is much more erratic than birds so look for this pattern.

26-83 pounds of bamboo a day

Population: Approximately 1,600 individuals in the wild

Chinese government had established over 50 panda reserves

Eventhough parachutes seem to have been used in China since the 1100s and that Leonardo da Vinci of Italy had invented devices similar to parachutes nowadays, worldwide skydivers state that the French inventor André-Jacques Garnerin is the one to make the first parachute. In 1797 he jumped from a balloon over Paris using a parachute and kept on making other jumps in France and also in England.

In World War I , that is between 1914 and 1918, the military began using parachutes in their missions