How girls fare when only a son will do

When it comes to parents' preferences for the genders of their children, there is a high level of disagreement between wives and husbands, according to a Cornell sociologist.

Robotic rover could support astronauts on moonwalks

Robotic companions are a mainstay of sci-fi series everywhere. From R2D2 to Johnny 5, these characters typically have a supporting role in the story and are helpful to their human companions. But what if they were integral ...

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