Robot that uses propellers for motivation…which means it can drive on walls.ï»…

Robot that uses propellers for motivation…which means it can drive on walls.
  1. According to the current theory, this is how wings evolved in birds.   They were used to aid in running up steep hills that were too steep for the predators to follow.    Chicks can be observed to use their wings this way to climb steep haystacks.    The theory is that this is the same learning that took place eons ago with proto-birds.

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