It was 1981 and kids were mesmerized, flipping the colorful puzzle cubes in class, at home or with friends. After the eras of secret decoder rings and hula hoops, Rubik’s Cube was one of the most ...
To astronomers, the new breed of hand-held laser pointer is a way to write in the sky, its two-mile-long beam allowing them to trace constellations and point out individual stars. To a lost hiker, the ...
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