internal body

heart

Heart is Courageous

Heart is Courageous DON’T worry too much about your heart, as so many healthy people seem to be doing nowadays; rejoice, rather, that nature has placed in your breast one of her most delicate yet durable marvels, an organ of surpassing patience, flexibility and strength. Rejoice, and try to understand how it works. It will

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brain evolution

Brain and memory

Brain and memory, the human nervous system brain, spinal cord and nerves contains what is substantially a wet-cell electric battery, generating a direct current of about a tenth of a volt roughly one-twentieth as much as a torch battery. The electric charge is created by two body chemicals, sodium and potassium, operating on nerve tissues

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eye-disease

The Evolution of Eyes

The Evolution of Eyes Ages ago, when the earth had cooled and life had begun to appear in its tepid waters, one of the first things that developed was eyes. Even the amoeba, the lowliest of all known animals, of which countless millions exist today precisely as they were when life originated on this planet,

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