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The secrets revealed of the incredible city in the clouds built by the Incas.

The biohybrid robot is half electronic and half organic, and could be the first step towards something bigger.

NASA has already recorded bursts of radiation from the Sun that could kill a human, but that was in 1972 and would only hit astronauts in orbit.

Sailors, military, fishermen, divers, travelers and oceanographers have reported stories about humanoid creatures that live in oceans, rivers and lakes.

Our history books are continually being tested and challenged, but few discoveries have thrown a wrench into the officially accepted narrative of human’s origin like the DNA of Alfred Perry.

The first dimension is height, the second is width, the third is depth, and the fourth is time, but no one has yet been able to explain what is the fifth dimension.

Image emerged at a moment in the space race.

Google Mars enables interactive virtual exploration of different regions of the Red Planet.