While NASA was trying to put a man on the moon, the Navy was quietly conducting a series of tests to see if humans could live ...

Inside, the habitat resembled a modest RV, with basic amenities such as a shower ... During the Cold War, the Navy built special compartments on submarines to act as mini habitats for saturation ...

While NASA was on the front pages trying to put a man on the moon, the Navy was quietly conducting ... like kind of a cigar-shaped vessel, like a submarine with legs like a dinner table on it ...

Leonardo Da Vinci is known for the creation of iconic images like the Mona Lisa and the Vitruvian Man, but his designs ...