The hidden structure of the periodic system

The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to Dmitri Mendeleev and Lothar Meyer and the approaches of other chemists ...

Fresh look at mysterious Nasca lines in Peru

A scientific approach has re-identified huge birds etched into the desert plains of southern Peru around 2,000 years ago. The birds appear to be exotic to the region, and further studies could help explain their significance. ...

The dark side of personality

Social life entails countless situations in which people have to trust each other. From mundane family matters to profane issues such as trade negotiations among world leaders in a conflicted globalized world—all require ...

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