The longest U.S. highway is Route 20, which is over 3,365 miles

The U.S. Route 20 (US 20) is an east–west United States highway. The “0″ in its route number indicates that US 20 is a coast-to-coast route. Spanning 3,365 miles (5,415 km), it is the longest road in the United States, and the route roughly parallels that of Interstate 90 (I-90). However, since numbered US routes are not designated as such within the boundaries of national parks, Yellowstone National Park technically splits the route into two sections.

It and US 30 break the general U.S. Route numbering rules in Oregon, since US 30 actually starts north of US 20 and runs parallel to the north throughout the state. The two overlap and continue in the “correct” positioning near Caldwell, Idaho. This is because US 20 was not a planned coast-to-coast route while US 30 was. US 20 originally ended at the eastern entrance of Yellowstone Park; it was extended in 1940.

The highway’s eastern terminus is in Boston, Massachusetts, at Kenmore Square, where it meets Route 2. Its western terminus is in Newport, Oregon, at an intersection with US 101, within a mile of the Pacific Ocean.

In the last 30 years, only seven people have been killed by a polar bear in Canada

In contrast, about 500 bears are killed per year by humans across Canada, a rate believed by scientists to be unsustainable for some areas, notably Baffin Bay. Canada has allowed sport hunters accompanied by local guides and dog-sled teams since 1970

Unlike grizzly bears, polar bears are not territorial. Although stereotyped as being voraciously aggressive, they are normally cautious in confrontations, and often choose to escape rather than fight. Satiated polar bears rarely attack humans unless severely provoked, whereas hungry polar bears are extremely unpredictable and are known to kill and sometimes eat humans. Polar bears are stealth hunters, and the victim is often unaware of the bear’s presence until the attack is underway. Whereas brown bears often maul a person and then leave, polar bear attacks are more likely to be predatory and are almost always fatal. However, due to the very small human population around the Arctic, such attacks are rare.

In general, adult polar bears live solitary lives. Yet, they have often been seen playing together for hours at a time and even sleeping in an embrace, and polar bear zoologist Nikita Ovsianikov has described adult males as having “well-developed friendships.” Cubs are especially playful as well. Among young males in particular, play-fighting may be a means of practicing for serious competition during mating seasons later in life. Polar bears have a wide range of vocalisations, including bellows, roars, growls, chuffs and purrs.

In 1992, a photographer near Churchill took a now widely circulated set of photographs of a polar bear playing with a Canadian Eskimo Dog a tenth of its size. The pair wrestled harmlessly together each afternoon for ten days in a row for no apparent reason, although the bear may have been trying to demonstrate its friendliness in the hope of sharing the kennel’s food. This kind of social interaction is uncommon; it is far more typical for polar bears to behave aggressively towards dogs.

The Hundred Years War lasted for 116 years

The Hundred Years’ War was a series of conflicts waged from 1337 to 1453 between the Kingdom of England and the Kingdom of France for control of the French throne. Many allies of both sides were also drawn into the conflict. The war had its roots in a dynastic disagreement dating back to the time of William the Conqueror, who became King of England in 1066 while retaining possession of the Duchy of Normandy in France. As the rulers of Normandy and other lands on the continent, the English kings owed feudal homage to the king of France. In 1337,Edward III of England refused to pay homage to Philip VI of France, leading the French king to claim confiscation of Edward’s lands in Aquitaine.

Edward responded by declaring that he, not Philip, was the rightful king of France, a claim dating to 1328, when Charles IV of France died without a male heir. Edward was the closest male relative of Charles IV as son of Isabella of France, daughter of Philip IV of France and sister of Charles IV. But instead, Philip VI, the son of Philip IV’s younger brother, Charles of Valois, was crowned king of France in accordance with Salic Law, which disqualified female succession and the succession of males descended through female lines. The question of legal succession to the French crown was central to the war over generations of English and French claimants.

The war is commonly divided into three phases separated by truces: the Edwardian Era War (1337–1360), the Caroline War (1369–1389) and the Lancastrian War (1415–1453), which saw the slow decline of English fortunes after the appearance of Joan of Arc in 1429. Contemporary European conflicts directly related to this conflict were the Breton War of Succession, theCastilian Civil War, the War of the Two Peters, and the 1383-1385 Crisis. The term “Hundred Years’ War” is a periodization invented later by historians to encompass all of these events.

Research on pigs led to the development of CAT scans.

In the early 1900s, the Italian radiologist Alessandro Vallebona proposed a method to represent a single slice of the body on the radiographic film. This method was known as tomography. The idea is based on simple principles of projective geometry: moving synchronously and in opposite directions the X-ray tube and the film, which are connected together by a rod whose pivot point is the focus; the image created by the points on thefocal plane appears sharper, while the images of the other points annihilate as noise. This is only marginally effective, as blurring occurs in only the “x” plane. There are also more complex devices that can move in more than one plane and perform more effective blurring.

Every single hamster in the United States today comes from a single litter captured in Syria in 1930

Although the Syrian hamster or golden hamster (Mesocricetus auratus) was first described scientifically in 1839, researchers were not able to successfully breed and domesticate hamsters until 1939. The entire laboratory and pet populations of Syrian hamsters appear to be descendants of a single brother-sister pairing. These littermates were captured and imported in 1930 from Aleppo by Israel Aharoni, a zoologist of the University of Jerusalem. In Jerusalem, the hamsters bred very successfully. Years later, animals of this original breeding colony were exported to the USA, where Syrian hamsters became one of the most popular pets and laboratory animals. Comparative studies of domestic and wild Syrian hamsters have shown reduced genetic variability in the domestic strain. However, the differences in behavioral, chronobiological, morphometrical, hematological and biochemical parameters are relatively small and fall into the expected range of interstrain variations in other laboratory animals.

A top freestyle swimmer achieves a speed of only 4 miles per hour. Fish, in contrast, have been clocked at 80 mph

The black marlin (Istiompax indica) is a species of marlin found in tropical and subtropical Indo-Pacific and east Pacific oceans from near the surface to depths of 915 m (3,002 ft). It is a large commercial game fishwith a maximum published length of 4.65 m (15.3 ft) and weight of 750 kg (1,700 lb). It is one of the largest marlins and bony fish. This marlin is one of the fastest fish on earth reaching speeds up to 80 mph (130 km/h). This fish is highly prized if caught.

Emilio Marco Palma was the first person born in Antarctica in 1978

Emilio Marcos Palma (born January 7, 1978) is an Argentine national who is the first person known to be born on the continent of Antarctica. Emilio weighed 7  lb 8  oz (3.4 kg). He was born in Fortín Sargento Cabral at theEsperanza Base near the tip of the Antarctic Peninsula. His father, Captain Jorge Emilio Palma, was head of the Argentine army detachment at the base. Whilst ten people have been born on Antarctica since, Palma’s birthplace remains the most southerly.

In late 1977, Silvia Morella de Palma, who was then seven months pregnant, was airlifted to Esperanza Base, in order to complete her pregnancy in the base. The airlift was a part of the Argentine solutions to the sovereignty dispute over territory in Antarctica. Emilio was automatically granted Argentine citizenship by the government since his parents were both Argentine citizens, and he was born in the claimed Argentine Antarctica. This is a sector of Antarctica claimed by Argentina as part of its national territory, although this claim is not internationally recognised and overlaps with British and Chilean claims in Antarctica.

As Emilio was born in the claimed British Antarctic Territory, he had the right to claim British Overseas Territory citizenship under the terms of British Antarctic nationality law. However, neither he nor his parents filed a request.

He is featured in the Guinness Book of Records as the first person in history known to be born on the continent. However, Solveig Gunbjørg Jacobsen of Norway, born in the island territory of South Georgia in 1913, is sometimes claimed as the actual first Antarctica birth as that territory is considered part of Antarctica.