Unsealed Alien Files - Season 4 Episode 1 - Second Skin

Many experts believe aliens have visited the Earth for thousands of years, but if we can't survive space travel without a protective suit, how can they? Are some aliens mere shells or clones with an artificial consciousness? Could this be why many eyewitnesses report both robotic and biological behaviors during close encounters ??? Join us as we investigate the nature and biology of extra terrestrial second skin.
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