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Picture of the day

Lightning strikes over the Presidential Palace, in Brasília. After the terrorist attacks of ISIS on different cities in France, Brazil expresses its sympathy by displaying the colors of the French flag on the Palácio da Alvorada. Nov 13, 2015.

Media of the day

"Journey of Sound to the Brain" – an animated explanatory video about the human hearing or auditory system.
It illustrates how sounds travel to the inner ear, and then to the brain, where they are interpreted and understood. The cochlea in the inner ear is a spiral-shaped organ that contains hair cells, which sense sound vibrations. Hair cells convert sound vibrations into chemical signals that the auditory nerve can understand.

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