Scientists have discovered that dolphins are genetically close to humans. Now they’ve learned that humpback whales have a type of brain cell that is seen only in humans, the great apes, and dolphins, and there may be a very special reason for this.

CNN reports that neuroscientists Patrick Hof and Estel Van der Gucht, who made the discovery, are speculating that perhaps some species other than humans have the potential for higher intelligence but have not had the need to develop their brain power, because they do not need to invent technology since they were not stressed, the way humans were, during the ice age. Since both dolphins and whales breathe oxygen, scientists think that they evolved the ability to walk on land, then gave it up in order to return to the water, where they enjoyed an easier existence.

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Something incredible happened to mankind between 30,000 and 50,000 years ago: after over a hundred thousand years of living in a sort of dream, we suddenly began to draw and paint, leaving the unforgettable and sophisticated images on cave walls. In Supernatural Graham Hancock sets out to discover the truth about the influences that gave birth to the modern human mind.

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