Meet Isabukuru, a protected gorilla in Rwanda. In total, there are about 650 individuals of these wonderful animals left in the world.

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The smell of rotting potatoes can kill you.

Rotten potatoes can be dangerous because they emit a deadly solanine gas that makes the person unconscious, and even kills him if you inhale this gas. If you eat rotten potatoes, the toxin can cause headache, vomiting, diarrhoea, paralysis, coma and sometimes death.

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At only 2.1% Vietnam has the lowest obesity rate in the world. It's less than the obesity rate of Uganda (5.3%) and far less than that of the USA (36.2%)

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There is a road in France that can only be used twice a day for a few hours. It then disappears underwater at a depth of 13 feet.

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Masouleh is a village in Iran where the streets are above the houses.

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A bull from the USA was included in the Guinness Book of Records as the owner of the longest horns in the world. Their length exceeds three meters.

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Cataplexy is a rare sleep disorder that causes sufferers to fall asleep whenever they laugh

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Putting sugar on a wound or cut will greatly reduce pain and speed up the healing process.

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Giraffes are 30 times more likely to get hit by lightning than people. True, there are only five well-documented fatal lightning strikes on giraffes between 1996 and 2010. But due to the population of the species being just 140,000 during this time, it makes for about 0.003 lightning deaths per thousand giraffes each year. This is 30 times the equivalent fatality rate for humans.

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This is the world’s smallest artificial heart. It kept a 16-month-old baby alive for 13 days until a donor heart became available.

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The human brain has enough memory to hold three million hours of television. The brain's memory is 2.5 petabytes. You would have to leave the TV running continuously for more than 300 years to use up all that storage.

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The shortest land border is 150 meters long and is shared by Botswana and Zambia

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Cows have best friends and can become stressed when they are separated from them. They form strong social bonds with other cows.

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