Now boarding: Passengers ready for world's longest flight
Passengers were getting ready to board the world's longest flight on Thursday—a marathon 19 hours in the air between Singapore and New York.
Oct 11, 2018
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Passengers were getting ready to board the world's longest flight on Thursday—a marathon 19 hours in the air between Singapore and New York.
Oct 11, 2018
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88
Everybody could use a third arm sometimes, but for some it would be particularly helpful.
Aug 25, 2022
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101
In the circulatory system, veins (from the Latin vena) are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood. They differ from arteries in structure and function; for example, arteries are more muscular than veins and they carry blood away from the heart.
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