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 ...

TV ads inspire investment interest, study finds

Stock trading volumes in the United States have soared over the last year and much of it seems to be driven by retail investors. With thousands of stocks to choose from, what factors influence investors' decisions?

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