Mexico demands Sotheby's halt auction of artifacts

(AP)—The Mexican government demanded Wednesday that the Sotheby's auction house halt the planned sale of 51 pre-Colombian Mexican artifacts, arguing they are protected national historical pieces.

Segregation of Hispanics on the decline, except for Mexicans

Even as the Hispanic population continues to grow rapidly, the residential separation of most Hispanic groups has declined sharply in the last two decades, according to a new analysis of census data released by the US2010 ...

Underwater robots help discover hidden faults

(Phys.org)—Hidden beneath ocean waves and masked by sand and mud on the seafloor, underwater faults are notoriously difficult to see and even more difficult to study. As a result, geologists struggle to evaluate the risks ...

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