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EntertainmentNew research shows: Crows can 'read' numbers from 1 to 4
New findings help us better understand the intelligence of crows, animals that always excite scientists.Which species has the biggest brain? Are they the smartest?
Which species has the largest brain in the animal world? And is a big brain linked to a high IQ?
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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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