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The unique thermal river - known as Shanay-timpishka - can be found in the Amazon rainforest in Peru.
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An ultramarathon runner unwittingly encountered a mysterious figure during a 100-mile race in the Hawaii rainforest.
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The children were miraculously found very much alive after a massive search effort spanning more than five weeks.
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Researchers uncovered the enormous, previously unknown civilization by conducting LiDAR surveys of the region.
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A man dubbed 'loneliest on Earth' has died after spending decades alone in the Brazilian rainforest.
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Two young brothers recently went missing in the dense rainforest and were miraculously found alive 27 days later.
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Being the world's foremost expert on chimpanzees, Goodall certainly knows a thing or two about primates.
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A new study has shown that the asteroid that wiped out the dinosaurs also gave birth to the Amazon rainforest.
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Scientists have warned that the Amazon is at a crucial tipping point that could see it turn into savannah.
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Found in the Amazon rainforest, this incredible arachnid looks like a strange cross between a dog and a spider.
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Capable of taking drastic action to protect their colonies, these ants have a rather unusual defense mechanism.
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Dating back over 1,000 years, the tomb is thought to be that of King Te' Chan Ahk of the Wak dynasty.
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Researchers have discovered hundreds of new plant and animal species in the Amazon over the last few years.
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The extremely rare find is one of only a few examples of conjoined twins ever seen outside of humans.
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A new study has revealed that the indigenous Tsimane people have very low levels of vascular aging.
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More than 450 large geometrical geoglyphs have been discovered in areas cleared by deforestation.
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Scientists have discovered an entirely new species of primate in a remote Chinese rainforest.
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An ancient civilization is believed to have built standing stones in the rainforest over 1,000 years ago.
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Entomologist and TV host Phil Torres encountered the 4ft invertebrate during a tropical rainstorm.
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A BBC film crew has captured footage of a gigantic green anaconda in the Amazon rainforest in Ecuador.