A solar-powered airplane finished crossing the United States on Saturday, landing in New York City after flying over the Statue of Liberty during its historic bid to circle the globe, the project team said. The spindly, single-seat experimental aircraft, dubbed Solar Impulse 2, arrived at New York's John F. Kennedy International Airport at about 4 a.m. local time after it took off about five hours beforehand at Lehigh Valley International Airport in Pennsylvania, the team reported on the airplane's website. Such a pleasure to land in New York! For the 14th time we celebrate sustainability," said the project's co-founder Andre Borschberg on Twitter after flying over the city and the Statue of Liberty during the 14th leg of the trip around the globe. The Swiss team flying the aircraft in a campaign to build support for clean energy technologies hopes eventually to complete its circumnavigation in Abu Dhabi, where the journey began in March 2015. The solar cr...
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In total there is said to be around 400 million dogs in the world.
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The domestic dog has been one of the most popular working and companion animals throughout human history.
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Dogs perform many useful tasks for humans including hunting, farm work and security as well as assisting those with disabilities such as the blind.
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Although experts often disagree, there is scientific evidence which shows that the domestication of dogs could have occurred more than 15,000 years ago.
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There are hundreds of different breeds of dogs.
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Examples of these breeds include: Bulldog, German Shepherd, Collie, Golden Retriever, St Bernard, Greyhound, Bloodhound, Chihuahua, Labrador, Great Dane, Rottweiler, Boxer and Cocker Spaniel.
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The most popular breed of dog in the world by registered ownership is the Labrador. With their gentle nature, obedience, intelligence and near limitless energy, Labradors make for excellent family pets and reliable workers. They often assist police and are a common choice as guide dogs.
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Dogs have formed such a strong bond as pets, workers and companions to humans that they have earned the nickname "man's best friend".
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Humans help train various dog breeds to enter in competitions such as breed shows, agility and obedience contests, racing and sled pulling.
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Dog have superior hearing than humans, capable of hearing sounds at four times the distance.
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Dogs have a remarkable sense of smell, they are capable of differentiating odors in concentrations nearly 100 million times lower than humans can.
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The average life span for a dog is around 10 to 14 years.
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