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Russia's Su-35 fighter is said to be superior to current Western fourth generation aircraft. This military weapon received attention from many powers including the US and China.Helicopters fly by biofuel
The US Navy successfully tested the first flight of an unmanned bio-fueled MQ-8B Fire Scout helicopter.
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Can carp live 10 years in a tank without feeding?
Why do Italy and Switzerland have to redraw the border?
Japanese bullet train accident-free for 60 years
The world's most crowded apartment building: Can accommodate up to 30,000 people, the view inside is overwhelming
World's oldest wine jar contains cremated human bones
America catches strange signal from 1.3 billion light years away from Earth
Two black holes closest to Earth discovered, of a kind never seen before
Solar sails help spacecraft reach Mars in 26 days
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