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Cats are very important subjects in cancer research. Leukemia is perhaps the most infamous of the diseases shared by cats and people. In cats, it is caused by an AIDS-like retrovirus. A recently discovered vaccine against feline leukemia may act as a model for an AIDS vaccine. Mammary cancer is also common in the cat, and many features of feline mammary cancer resemble the human breast cancer which, among the human cancers, is the greatest killer of women.

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

eastern Australia

skull is flattened on the sides

largest monitor lizard or goanna native to Australia

fourth largest lizard on earth

Found west of the Great Dividing Range in the arid areas of Australia

canine group called gazehounds, which hunt by sight and speed instead of smell and endurance. It also mentions that gazehounds proved a valuable check against predators.

Having dogs hunt buffalo was not common practice on the frontier

hunt primarily by sight and speed rather than smell and endurance, as scent hounds do

soft-feathered, brownish emu is common throughout most of mainland Australia, although it avoids big cities, dense forests, and deserts.

The emu is the second-largest living bird in the world (the ostrich is the largest), with adult female emus being larger and heavier than the males.

can sprint at 30 miles per hour (48 kilometers per hour) for quite a distance. Emus are the only birds with calf muscles. Their feet have three toes and fewer bones and muscles than those of flying birds. Their strong legs also allow the bird to jump 7 feet (2.1 meters) straight up. With good eyesight and amazing agility, emus can escape most any trouble!

Lung cancer most often spreads to the liver, the adrenal glands, the bones and the brain.Metastatic lung cancer in the liver usually does not cause symptoms, at least by the time of diagnosis.Metastatic lung cancer in the adrenal glands also typically causes no symptoms by the time of diagnosis.Metastasis to the bones is most common with small cell cancers but also occurs with other lung cancer types. Lung cancer that has metastasized to the bone causes bone pain, usually in the backbone (vertebrae), the thighbones and the ribs.Lung cancer that spreads to the brain can cause difficulties with vision, weakness on one side of the body and/or seizures.

Japan entered into its second major prehistoric period, a civilized era known as the Yayoi period.

he name Yayoi is derived from an area Tokyo known as Yayoi, where the first documented pottery from this period was discovered in an archaeological excavation in 1884.

ron and bronze materials are believed to have been exchanged with Japanese envoys either for token tributes or prisoners of war.

According to an anonymous Soviet coach, "Perhaps 90% of sportsmen, including our own, use drugs"

   There are many types of performance enhancing drugs.  One common form of performance enhancing drugs is anabolic steroids

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

Remember the rhyme: "Red sky at night, sailor's delight; Red sky at morning, sailors take warning." Look for any sign of red in the sky (not a red sun); it will not be a bold orange or red the majority of the time, but that depends a little on where you live. Sailor's delight If you see a red sky during sunset (when you're looking to the west), there is a high pressure system with dry air that is stirring dust particles in the air, causing the sky to look red. Since prevailing front movements and jet streams weather usually move from west to east (see Tips), the dry air is heading towards you.

Check the grass for dew at sunrise. If the grass is dry, this indicates clouds or strong breezes, which can mean rain. If there's dew, it probably won't rain that day. However, if it rained during the night, this method will not be reliable.

Breakdance, breaking, b-boying or b-girling is a street dance style that evolved as part of the hip hop movement among African American and Puerto Rican youths in Manhattan and the South Bronx of New York City during the early 1970s

A breakdancer, breaker, b-boy or b-girl refers to a person who practices breakdancing.

Breakdancing may have begun as a building, productive, and a constructive youth culture alternative to the violence of urban street gangs.[1] Today, breakdancing culture is a remarkable discipline somewhere between those of dancers and athletes. Since acceptance and involvement centers on dance skills, breakdancing culture is often free of the common race and gender boundaries of a subculture and has been accepted worldwide.

As a gymnast, you have to be aware that gymnastics is one of the most demanding and strenuous sports around.

gymnasts incur injuries as often as football players do

These safety measures take the form of body and mental alertness, adequate muscle strength and resiliency, and above all, clear communication with between the gymnast, coach and child.

I could easily have broken my neck.

latest findings on young gymnasts: Nearly 426,000 kids ages 6 to 17 were treated for gymnastics-related injuries in U.S. emergency rooms between 1990 and 2005,

fractures and dislocations were most common among the younger set