The technique of bouncing sound and collecting the echo for range analysis is similar to the way bats see.
The little, blurry lima-bean nestled in the dark circle is our soon-to-be gromit. Unable to be seen in the photo is the tiny, rapid blinking of our "shinobaby's" heart beat.
On a Thursday, at about five o'clock, I wept into my hands and thanked God for the life that is stirring inside my wife.
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