Europeans in the Americas 1,000 years ago

Columbus was not the first European to reach the Americas. The Vikings got there centuries before, although exactly when has remained unclear. Here, an international team of scientists show that Europeans were already active ...

Fight or flight? Why individuals react as they do

Why do some people fight and others flee when confronting violence? "This question has been bothering me for quite some time," says Aidan Milliff, a fifth-year doctoral student who entered political science to explore the ...

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